Clear FF_INPUT_BUFFER_PADDING_SIZE bytes at the end of NALs in rbsp_buffer.
Clear FF_INPUT_BUFFER_PADDING_SIZE bytes at the end of NALs in rbsp_buffer.

Fixes valgrind uninitialized value warnings at the end of decoding H.264
frames.


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@16230 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg