Backport d30cc1ea (fix multiple CVEs)
    
        Fix buffer overflows in TIFF, PNG, IRIS, DPX, HDR and AVI loading.
    
        Solves these security issues from T52924:
        CVE-2017-2899
        CVE-2017-2900
        CVE-2017-2901
        CVE-2017-2902
        CVE-2017-2903
        CVE-2017-2904
        CVE-2017-2905
        CVE-2017-2906
        CVE-2017-2907
        CVE-2017-2918
    
        Differential Revision: https://developer.blender.org/D2999