libtiff: use of uninitialized values crash

The TIFFVStripSize function in tifstrip.c in LibTIFF 3.9.0 and 3.9.2 makes incorrect calls to the TIFFGetField function, which allows remote attackers to cause a denial of service application crash via a crafted TIFF image, related to "downsampled OJPEG input" and possibly related to a compiler...