examples: check the value returned by libusb_init()

Problem detected by the Coverity tool
CID 1042538 (#1 of 1): Unchecked return value (CHECKED_RETURN)4.
check_return: Calling function "libusb_init(libusb_context **)" without
checking return value (as is done elsewhere 11 out of 12 times).

diff --git a/examples/hotplugtest.c b/examples/hotplugtest.c
index fef01af..6cdf0c8 100644 (file)
--- a/examples/hotplugtest.c
+++ b/examples/hotplugtest.c
@@ -65,7 +65,12 @@ int main(int argc, char *argv[])
        product_id = (argc > 2) ? strtol (argv[2], NULL, 0) : 0x5005;
        class_id   = (argc > 3) ? strtol (argv[3], NULL, 0) : LIBUSB_HOTPLUG_MATCH_ANY;
 
-       libusb_init (NULL);
+       rc = libusb_init (NULL);
+       if (rc < 0)
+       {
+               printf("failed to initialise libusb: %s\n", libusb_error_name(rc));
+               return EXIT_FAILURE;
+       }
 
        if (!libusb_has_capability (LIBUSB_CAP_HAS_HOTPLUG)) {
                printf ("Hotplug capabilites are not supported on this platform\n");

diff --git a/libusb/version_nano.h b/libusb/version_nano.h
index a833d52..a387990 100644 (file)
--- a/libusb/version_nano.h
+++ b/libusb/version_nano.h
@@ -1 +1 @@
-#define LIBUSB_NANO 10839
+#define LIBUSB_NANO 10840