Corrected checking if the profile starts with Exif\0\0 (https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7499).
Corrected checking if the profile starts with Exif\0\0 (https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7499).

Danack/ImageMagick,Danack/ImageMagick,Danack/ImageMagick,Danack/ImageMagick,Danack/ImageMagick,Danack/ImageMagick