Align with libnfc API change: test nfc_init() result

examples/mifare-classic-format.c

@@ -168,6 +168,8 @@ main(int argc, char *argv[])
 
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-classic-read-ndef.c

@@ -117,6 +117,8 @@ main(int argc, char *argv[])
 
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count= nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-classic-write-ndef.c

@@ -197,6 +197,8 @@ main(int argc, char *argv[])
     
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-desfire-access.c

@@ -43,6 +43,8 @@ main(int argc, char *argv[])
 
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-desfire-create-ndef.c

@@ -98,6 +98,8 @@ main(int argc, char *argv[])
 
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-desfire-ev1-configure-ats.c

@@ -91,6 +91,8 @@ main(int argc, char *argv[])
 
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-desfire-ev1-configure-default-key.c

@@ -77,6 +77,8 @@ main(int argc, char *argv[])
     
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-desfire-ev1-configure-random-uid.c

@@ -87,6 +87,8 @@ main(int argc, char *argv[])
     
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-desfire-format.c

@@ -87,6 +87,8 @@ main(int argc, char *argv[])
     
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-desfire-info.c

@@ -41,6 +41,8 @@ main(int argc, char *argv[])
     
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-desfire-read-ndef.c

@@ -126,6 +126,8 @@ main(int argc, char *argv[])
     
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-desfire-write-ndef.c

@@ -155,6 +155,8 @@ main(int argc, char *argv[])
     
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

examples/mifare-ultralight-info.c

@@ -38,6 +38,8 @@ main (int argc, char *argv[])
 
     nfc_context *context;
     nfc_init (&context);
+    if (context == NULL)
+	errx(EXIT_FAILURE, "Unable to init libnfc (malloc)");
 
     device_count = nfc_list_devices (context, devices, sizeof (devices) / sizeof (*devices));
     if (device_count <= 0)

test/mifare_classic_fixture.c

@@ -36,6 +36,7 @@ cut_setup (void)
     size_t device_count;
     
     nfc_init (&context);
+    cut_assert_not_null (context, cut_message ("Unable to init libnfc (malloc)"));
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

test/mifare_desfire_ev1_fixture.c

@@ -36,6 +36,7 @@ cut_setup (void)
     size_t device_count;
     
     nfc_init (&context);
+    cut_assert_not_null (context, cut_message ("Unable to init libnfc (malloc)"));
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)

test/mifare_desfire_fixture.c

@@ -36,6 +36,7 @@ cut_setup (void)
   size_t device_count;
   
   nfc_init (&context);
+  cut_assert_not_null (context, cut_message ("Unable to init libnfc (malloc)"));
 
   device_count = nfc_list_devices (context, devices, 8);
   if (device_count <= 0)

test/mifare_ultralight_fixture.c

@@ -36,6 +36,7 @@ cut_setup (void)
     size_t device_count;
     
     nfc_init (&context);
+    cut_assert_not_null (context, cut_message ("Unable to init libnfc (malloc)"));
 
     device_count = nfc_list_devices (context, devices, 8);
     if (device_count <= 0)