* configure.ac: fixed typo.

configure.ac

@@ -1845,7 +1845,7 @@ then
       AC_CHECK_HEADERS(postproc/postprocess.h, [], [AC_MSG_ERROR([Missing header file postproc/postprocess.h.])] )
       AC_CHECK_LIB(avcodec, avcodec_init, [
         VLC_ADD_BUILTINS([ffmpeg])
-        VLC_ADD_LDFLAGS([ffmpeg],[-lavcodec])
+        VLC_ADD_LDFLAGS([ffmpeg],[-lavcodec])],
          [ AC_MSG_ERROR([Could not find ffmpeg on your system: you may get it from http://ffmpeg.sf.net/ (cvs version is recommended). Alternatively you can use --disable-ffmpeg to disable the ffmpeg plugins.]) ])
       AC_CHECK_LIB(avformat, av_open_input_stream, [
         AC_DEFINE(HAVE_LIBAVFORMAT, 1,