[FFmpeg-cvslog] avcodec/bintext: Check font height

ffmpeg | branch: release/4.1 | Michael Niedermayer | Sun Jun 16 16:01:45 2019 +0200| [9b8a58fa78062ddee07a54237c77dcdc6186aab1] | committer: Michael Niedermayer avcodec/bintext: Check font height Fixes: division by zero Fixes: 15257/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_BINTEXT_fu

[FFmpeg-cvslog] avcodec/bintext: Check font height

ffmpeg | branch: master | Michael Niedermayer | Sun Jun 16 16:01:45 2019 +0200| [bfb58bdd7015a6df2d130c92cf284d6a2362f3df] | committer: Michael Niedermayer avcodec/bintext: Check font height Fixes: division by zero Fixes: 15257/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_BINTEXT_fuzzer-