Small clean up to stay consistent with code style

src/sidebar/frame-sync.js

@@ -187,15 +187,12 @@ function FrameSync($rootScope, $window, Discovery, annotationUI, bridge) {
 
   function destroyFrame(uri) {
     var frames = annotationUI.frames();
-    var frameToDestroy;
-    for (var i = 0; i < frames.length; i++) {
-      var frame = frames[i];
-      if (frame.uri === uri) {
-        frameToDestroy = frame;
-        break;
-      }
+    var frameToDestroy = frames.find(function (frame) {
+      return frame.uri === uri;
+    });
+    if (frameToDestroy) {
+      annotationUI.destroyFrame(frameToDestroy);
     }
-    if (frameToDestroy) annotationUI.destroyFrame(frameToDestroy);
   }
 
   /**

src/sidebar/reducers/frames.js

@@ -19,7 +19,9 @@ var update = {
 
   DESTROY_FRAME: function (state, action) {
     var index = state.frames.indexOf(action.frame);
-    if (index >= 0) state.frames.splice(index, 1);
+    if (index >= 0) {
+      state.frames.splice(index, 1);
+    }
     return {frames: state.frames};
   },