Fix bug 2604132 40s skip after undocking

In case of A2DP write errors, there is an overflow in the calculation
of the sleep duration to simulate the timing of a successful write.

Change-Id: Ic4e570aebf07fac69735aab1bbc2fc73512ee795

libs/audioflinger/A2dpAudioInterface.cpp

@@ -302,7 +302,7 @@ ssize_t A2dpAudioInterface::A2dpAudioStreamOut::write(const void* buffer, size_t
 
 Error:
     // Simulate audio output timing in case of error
-    usleep(bytes * 1000000 / frameSize() / sampleRate());
+    usleep(((bytes * 1000 )/ frameSize() / sampleRate()) * 1000);
 
     return status;
 }