pwr/patcher: Use screw.Rename in test corruptions

2 jobs for patcher-tests in 5 minutes and 53 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #47064
linux
test:linux

00:05:53

failed #47065
windows
test:windows

00:01:29

 
Name Stage Failure
failed
test:windows Test
    gen_test.go:136: Range Ops:    1, Data Ops:     1, Data Len:     0KiB, For Source shorter then target, same content..
gen_test.go:136: Range Ops: 4, Data Ops: 4, Data Len: 2096KiB, For Source shorter then target, slightly different content..
gen_test.go:136: Range Ops: 0, Data Ops: 1, Data Len: 4096KiB, For Target empty and source has content..
gen_test.go:136: Range Ops: 0, Data Ops: 1, Data Len: 0KiB, For Source empty and target has content..
gen_test.go:136: Range Ops: 0, Data Ops: 1, Data Len: 6KiB, For Source and target both smaller then a block size..
PASS
coverage: 72.9% of statements
ok github.com/itchio/wharf/wsync 41.660s coverage: 72.9% of statements
ERROR: Job failed: exit status 1