Merge pull request #50 from Leanplum/feature/fix-LP-5003

fix(NPE) add null checker at isInstance method.

Author: Enuviel

AndroidSDK/src/com/leanplum/internal/LeanplumManifestHelper.java

@@ -419,6 +419,10 @@ private static boolean hasComponent(List<ManifestComponent> componentsList, Stri
    */
   private static boolean isInstance(ManifestComponent component, String className) {
     try {
+      if (component == null || component.name == null) {
+        return false;
+      }
+      
       if (component.name.equals(className)) {
         return true;
       } else {