blockimgdiff.py

解决Android9.0制作差分包时imgdiff 差分apk时报错，Failed to generate imgdiff for ...... imgdiff.cpp:661] Failed to open zip file /tmp/tgt-KxNSNW: Invalid offset. 解决方案是在imgdiff算法报错时，使用bsdiff算法去对apk做差分。 来自@qq_36071820