exit out early and continue if no annotations are found

Differential Revision: D4742299

fbshipit-source-id: 8006c5c9b25c951aec12ad5c63fdaf03fe1f6e67

ReactAndroid/src/main/java/com/facebook/react/module/processing/ReactModuleSpecProcessor.java

@@ -80,11 +80,15 @@ public class ReactModuleSpecProcessor extends AbstractProcessor {
       ReactModuleList.class);
     for (Element reactModuleListElement : reactModuleListElements) {
       TypeElement typeElement = (TypeElement) reactModuleListElement;
+      ReactModuleList reactModuleList = typeElement.getAnnotation(ReactModuleList.class);
+      if (reactModuleList == null) {
+        continue;
+      }
+
       ClassName className = ClassName.get(typeElement);
       String packageName = ClassName.get(typeElement).packageName();
       String fileName = className.simpleName();
 
-      ReactModuleList reactModuleList = typeElement.getAnnotation(ReactModuleList.class);
       List<String> nativeModules = new ArrayList<>();
       try {
         reactModuleList.nativeModules(); // throws MirroredTypesException