Android SurfaceViewRenderer: Make sure not to call eglCreateSurface() twice

talk/app/webrtc/java/android/org/webrtc/SurfaceViewRenderer.java

 /*
  * libjingle
  * Copyright 2015 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 155 matching lines @@
 
   /**
    * Create and make an EGLSurface current if both init() and surfaceCreated() have been called.
    */
   public void tryCreateEglSurface() {
     // |renderThreadHandler| is only created after |eglBase| is created in init(), so the
     // following code will only execute if eglBase != null.
     runOnRenderThread(new Runnable() {
       @Override public void run() {
         synchronized (layoutLock) {
-          if (isSurfaceCreated) {
+          if (isSurfaceCreated && !eglBase.hasSurface()) {
             eglBase.createSurface(getHolder().getSurface());
             eglBase.makeCurrent();
             // Necessary for YUV frames with odd width.
             GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1);
           }
         }
       }
     });
   }
 
@@ skipping 351 matching lines @@
       if (framesReceived > 0 && framesRendered > 0) {
         final long timeSinceFirstFrameNs = System.nanoTime() - firstFrameTimeNs;
         Logging.d(TAG, getResourceName() + "Duration: " + (int) (timeSinceFirstFrameNs / 1e6) +
             " ms. FPS: " + (float) framesRendered * 1e9 / timeSinceFirstFrameNs);
         Logging.d(TAG, getResourceName() + "Average render time: "
             + (int) (renderTimeNs / (1000 * framesRendered)) + " us.");
       }
     }
   }
 }