[MPlayer-dev-eng] [PATCH] fix unsafe 'switch_audio' property

[Mathieu SCHROETER]

Hi,

Like the properties 'chapter' and 'angle' (patchs sent to this
list on 2008.07.13), the property 'switch_audio' is unsafe with
set_property.

to reproduce the segv (for example):

   $mplayer -idle -slave
    set_property switch_audio 1


returns:

   Program received signal SIGSEGV, Segmentation fault.
   [Switching to Thread 0x7fc396b477e0 (LWP 31171)]
   0x000000000047348d in mp_property_audio (prop=<value optimized out>,
   action=<value optimized out>, arg=0x10b89b0, mpctx=0xdd1120) at
   command.c:842
   842		current_id = mpctx->demuxer->audio->id;


Because mpctx->demuxer is NULL..

This patch will fix the segv..


Regards,
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