CVE-2019-7578: Fix a buffer overread in InitIMA_ADPCM If IMA ADPCM format chunk was too short, InitIMA_ADPCM() parsing it could read past the end of chunk data. This patch fixes it. CVE-2019-7578 https://bugzilla.libsdl.org/show_bug.cgi?id=4494 Signed-off-by: Petr P?sa? <ppisar@redhat.com>