microdvd: do not export framerate hint as subtitle packet

MicroDVD has a "hack" for specifying the video framerate the subtitle
was authored against. The demuxer reads this hint correctly, but didn't
skip it correctly.

This was not noticed, because the exported packet has its duration set
to 0, making it invisible (depending on the API user's rendering logic).
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/microdvddec.c

@@ -112,6 +112,7 @@ static int microdvd_read_header(AVFormatContext *s)
                 && frame <= 1 && fps > 3 && fps < 100) {
                 pts_info = av_d2q(fps, 100000);
                 has_real_fps = 1;
+                continue;
             }
             if (!st->codec->extradata && sscanf(line, "{DEFAULT}{}%c", &c) == 1) {
                 st->codec->extradata = av_strdup(line + 11);

tests/ref/fate/sub-microdvd

@@ -7,13 +7,12 @@ PlayResY: 288
 [V4+ Styles]
 Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
 Style: Default,Comic Sans MS,30,&H123456,&H123456,&H0,&H0,0,0,0,0,100,100,0,0,1,1,0,2,10,10,10,0
-
-[Events]
-Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
-Dialogue: 0,0:00:00.00,0:00:40.00,Default,,0,0,0,,25.000 FPS
-Dialogue: 0,0:00:40.00,0:00:52.00,Default,,0,0,0,,{\c&H345678&}foo{\c}\N{\c&HABCDEF&}bar{\c}\Nbla
-Dialogue: 0,0:00:52.00,0:00:56.00,Default,,0,0,0,,{\u1}{\s1}{\i1}{\b1}italic bold underline strike{\s0}{\u0}\Nitalic bold no-underline no-strike
-Dialogue: 0,0:00:56.00,0:01:00.00,Default,,0,0,0,,back to
+
+[Events]
+Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
+Dialogue: 0,0:00:40.00,0:00:52.00,Default,,0,0,0,,{\c&H345678&}foo{\c}\N{\c&HABCDEF&}bar{\c}\Nbla
+Dialogue: 0,0:00:52.00,0:00:56.00,Default,,0,0,0,,{\u1}{\s1}{\i1}{\b1}italic bold underline strike{\s0}{\u0}\Nitalic bold no-underline no-strike
+Dialogue: 0,0:00:56.00,0:01:00.00,Default,,0,0,0,,back to
 Dialogue: 0,0:01:00.00,0:01:04.00,Default,,0,0,0,,the future
 Dialogue: 0,0:01:20.00,0:01:24.92,Default,,0,0,0,,{\pos(10,20)}Some more crazy stuff
 Dialogue: 0,0:02:14.00,0:02:15.60,Default,,0,0,0,,this subtitle...