ANDROID: Fix a race condition

setSurface is done in a different thread than the one that starts
the scummvm main. The main thread would then wait until the setSurface
thread notifies. The setSurface thread would notify before it actually
calls setSurface, meaning if the thread is preemted before calling
setSurface, initSurface will assert, causing the app to crash.

backends/platform/android/org/scummvm/scummvm/ScummVM.java

@@ -86,13 +86,15 @@ final public void surfaceChanged(SurfaceHolder holder, int format,
 		Log.d(LOG_TAG, String.format("surfaceChanged: %dx%d (%d)",
 										width, height, format));
 
+		// store values for the native code
+		// make sure to do it before notifying the lock
+		// as it leads to a race condition otherwise
+		setSurface(width, height);
+
 		synchronized(_sem_surface) {
 			_surface_holder = holder;
 			_sem_surface.notifyAll();
 		}
-
-		// store values for the native code
-		setSurface(width, height);
 	}
 
 	// SurfaceHolder callback