demux/avformat/demux.c: Check malloc return values.

modules/demux/avformat/demux.c

@@ -212,6 +212,11 @@ int OpenDemux( vlc_object_t *p_this )
     p_demux->pf_demux = Demux;
     p_demux->pf_control = Control;
     p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
+    if( !p_sys )
+    {
+        free( psz_url );
+        return VLC_ENOMEM;
+    }
     p_sys->ic = 0;
     p_sys->fmt = fmt;
     p_sys->i_tk = 0;
@@ -224,7 +229,12 @@ int OpenDemux( vlc_object_t *p_this )
     /* Create I/O wrapper */
     p_sys->io_buffer_size = 32768;  /* FIXME */
     p_sys->io_buffer = malloc( p_sys->io_buffer_size );
-
+    if( !p_sys->io_buffer )
+    {
+        free( psz_url );
+        CloseDemux( p_this );
+        return VLC_ENOMEM;
+    }
 #if LIBAVFORMAT_VERSION_INT >= ((53<<16)+(2<<8)+0)
     p_sys->ic = avformat_alloc_context();
     p_sys->ic->pb = avio_alloc_context( p_sys->io_buffer,
@@ -321,7 +331,8 @@ int OpenDemux( vlc_object_t *p_this )
             if( cc->palctrl )
             {
                 fmt.video.p_palette = malloc( sizeof(video_palette_t) );
-                *fmt.video.p_palette = *(video_palette_t *)cc->palctrl;
+                if( fmt.video.p_palette )
+                    *fmt.video.p_palette = *(video_palette_t *)cc->palctrl;
             }
 #else
 # warning FIXME: implement palette transmission