CameraBridgeViewBase synchronizes on a final field

Synchronizing against non-final fields is advised against.

modules/java/generator/src/java/android+CameraBridgeViewBase.java

@@ -38,7 +38,7 @@ public abstract class CameraBridgeViewBase extends SurfaceView implements Surfac
     private Bitmap mCacheBitmap;
     private CvCameraViewListener2 mListener;
     private boolean mSurfaceExist;
-    private Object mSyncObject = new Object();
+    private final Object mSyncObject = new Object();
 
     protected int mFrameWidth;
     protected int mFrameHeight;