Transform codec short name into a single word.

patch by Stefano Sabatini, stefano.sabatini-lala poste it

Originally committed as revision 13023 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/vmnc.c

@@ -510,7 +510,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
 }
 
 AVCodec vmnc_decoder = {
-    "VMware video",
+    "vmnc",
     CODEC_TYPE_VIDEO,
     CODEC_ID_VMNC,
     sizeof(VmncContext),