Update GCMIntentService.java

Author: rubenstolk

src/android/com/plugin/gcm/GCMIntentService.java

@@ -82,7 +82,7 @@ protected void onMessage(Context context, Intent intent) {
 				}
 
 				// Send a notification if there is a message
-				if (message && message.length() != 0) {
+				if (message != null && message.length() != 0) {
 					createNotification(context, extras);
 				}
 			}