parse: do not ask to run as root if not needed

On macOS it is expected to get the error:
 idVendor:  0x0B05  Can't get iManufacturer string: LIBUSB_ERROR_INVALID_PARAM
 idProduct: 0x1825  Can't get iProduct string: LIBUSB_ERROR_INVALID_PARAM

Running as root does not solve the problem. So need to fail and ask to
re-run as root in that case.

src/parse.c

@@ -145,7 +145,7 @@ int main(int argc, char *argv[])
 		{
 			(void)fprintf(stderr, "  Can't get iManufacturer string: %s\n",
 				libusb_error_name(r));
-			if (getuid())
+			if (r != LIBUSB_ERROR_INVALID_PARAM && getuid())
 			{
 				(void)fprintf(stderr,
 					BRIGHT_RED "Please, restart the command as root\n" NORMAL);