Simplify code.

Move !guiInfo.sh_video condition to existing if (sh_audio) statement.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@37192 b3059339-0415-0410-9bf9-f77b7e298cf2
Replace deprecated avcodec_alloc_frame().


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@37193 b3059339-0415-0410-9bf9-f77b7e298cf2