fftools/ffmpeg_opt: Fix mixed declarations and code

Introduced in ed3c317d.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

fftools/ffmpeg_opt.c

@@ -3007,10 +3007,11 @@ static int opt_preset(void *optctx, const char *opt, const char *arg)
 static int opt_old2new(void *optctx, const char *opt, const char *arg)
 {
     OptionsContext *o = optctx;
+    int ret;
     char *s = av_asprintf("%s:%c", opt + 1, *opt);
     if (!s)
         return AVERROR(ENOMEM);
-    int ret = parse_option(o, s, arg, options);
+    ret = parse_option(o, s, arg, options);
     av_free(s);
     return ret;
 }
@@ -3087,10 +3088,11 @@ static int opt_vsync(void *optctx, const char *opt, const char *arg)
 static int opt_timecode(void *optctx, const char *opt, const char *arg)
 {
     OptionsContext *o = optctx;
+    int ret;
     char *tcr = av_asprintf("timecode=%s", arg);
     if (!tcr)
         return AVERROR(ENOMEM);
-    int ret = parse_option(o, "metadata:g", tcr, options);
+    ret = parse_option(o, "metadata:g", tcr, options);
     if (ret >= 0)
         ret = av_dict_set(&o->g->codec_opts, "gop_timecode", arg, 0);
     av_free(tcr);