Merge branch 'jk/patch-corrupted-delta-fix'

Malformed or crafted data in packstream can make our code attempt to read or write past the allocated buffer and abort, instead of reporting an error, which has been fixed. * jk/patch-corrupted-delta-fix: t5303: use printf to generate delta bases patch-delta: handle truncated copy parameters patch-delta: consistently report corruption patch-delta: fix oob read t5303: test some corrupt deltas test-delta: read input into a heap buffer