am 7835d4f: Merge "Fix SurfaceView notifies on invalid surfaces."

* commit '7835d4fb4e99bac698599a269ce7f84f2de1fb46':
  Fix SurfaceView notifies on invalid surfaces.

Author: Jean-Baptiste Queru

core/java/android/view/SurfaceView.java

@@ -531,7 +531,7 @@ private void updateWindow(boolean force, boolean redrawNeeded) {
 
                     mSurface.transferFrom(mNewSurface);
 
-                    if (visible) {
+                    if (visible && mSurface.isValid()) {
                         if (!mSurfaceCreated && (surfaceChanged || visibleChanged)) {
                             mSurfaceCreated = true;
                             mIsCreating = true;