codec2: do not request VDA reset again before previous one is done

If stop() is called right after flush() (before flush done callback from VDA),
it should prevent to call VDA->reset() twice.

Bug: 73261432
Test: CtsMediaTestCases android.media.cts.MediaPlayerTest#testLocalVideo_MP4_H264_480x360_1000kbps_25fps_AAC_Stereo_128kbps_44110Hz
Change-Id: If063e53816f6bf82213aba0d07f7012996957b42
1 file changed