ffserver: use codec time_base for stream

This fixes producing swf and rm files as done by ffservertest.
Reviewed-by: Reynaldo H. Verdejo Pinochet <reynaldo@osg.samsung.com>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

ffserver.c

@@ -3561,7 +3561,7 @@ static LayeredAVStream *add_av_stream1(FFServerStream *stream,
     //NOTE we previously allocated internal & internal->avctx, these seemed uneeded though
     fst->codecpar = avcodec_parameters_alloc();
     fst->index = stream->nb_streams;
-    fst->time_base = (AVRational) {1, 90000};
+    fst->time_base = codec->time_base;
     fst->pts_wrap_bits = 33;
     fst->sample_aspect_ratio = codec->sample_aspect_ratio;
     stream->streams[stream->nb_streams++] = fst;

tests/ffserver.regression.ref

 233020d119085ba47535d5f2faf73cc0 *ff-test_h.avi
 431b75d1f12cb039acebad61a3d39225 *ff-test_l.avi
-d41d8cd98f00b204e9800998ecf8427e *ff-test.swf
+a767dbdf5d1bded3450279f812f97b37 *ff-test.swf
 dc16f607e13328a832e73801cd21ec98 *ff-test_h.asf
 69337d6c8cd7ac7e626338decdbf41d3 *ff-test_l.asf
-d41d8cd98f00b204e9800998ecf8427e *ff-test_h.rm
-d41d8cd98f00b204e9800998ecf8427e *ff-test_l.rm
+06f5a6a4c5d1c6735f4d0068e825c91f *ff-test_h.rm
+1f57580f02f0317407b3b82a3d5e093f *ff-test_l.rm
 4c887dfc1dd0f6ea1a3a2be6dd32e495 *ff-test.jpg
 1d04b73b04aad27793cc762d5afabac1 *ff-test_small.jpg
 bc36c40ee34ebee6ffe50f3094aab733 *ff-test.mjpg
-56c8b3ba2c4f3eebfa6d2a895e042ee3 *ff-stat
+128530a16464be60d27d013c30401851 *ff-stat