[FFmpeg-cvslog] lavfi/graphparser: Constify a variable.

[Carl Eugen Hoyos]

ffmpeg | branch: master | Carl Eugen Hoyos <ceffmpeg at gmail.com> | Sat Oct 21 20:24:49 2017 +0200| [ea049ad862a4b2b398bbdade5af36291d786e02d] | committer: Carl Eugen Hoyos

lavfi/graphparser: Constify a variable.

Fixes the following warning:
libavfilter/graphparser.c:122:10: warning: assignment discards 'const' qualifier from pointer target type

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ea049ad862a4b2b398bbdade5af36291d786e02d
---

 libavfilter/graphparser.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/graphparser.c b/libavfilter/graphparser.c
index 1405926bfd..d92b5360a6 100644
--- a/libavfilter/graphparser.c
+++ b/libavfilter/graphparser.c
@@ -96,7 +96,7 @@ static char *parse_link_name(const char **buf, void *log_ctx)
 static int create_filter(AVFilterContext **filt_ctx, AVFilterGraph *ctx, int index,
                          const char *name, const char *args, void *log_ctx)
 {
-    AVFilter *filt;
+    const AVFilter *filt;
     char name2[30];
     const char *inst_name = NULL, *filt_name = NULL;
     char *tmp_args = NULL;