plumbing: object/patch, printStat strings.Repeat cause panic

[cookeem]

int(math.Floor(deln / scaleFactor)) return negative value cause strings.Repeat panic

strings.Repeat(0x2322604, 0x1, 0xfffffffffffffff1, 0x0, 0x0)
 /usr/local/go/src/strings/strings.go:529 +0x5e5
github.com/go-git/go-git/v5/plumbing/object.printStat(0xc0003d0000, 0x1, 0x1, 0xc0003d0000, 0x1)
 /go/pkg/mod/github.com/go-git/go-git/v5@v5.3.0/plumbing/object/patch.go:291 +0x225
github.com/go-git/go-git/v5/plumbing/object.FileStats.String(...)
 /go/pkg/mod/github.com/go-git/go-git/v5@v5.3.0/plumbing/object/patch.go:238
dory.gitGetDiff(0xc00100b0b0, 0xc000c58780, 0x28, 0x0, 0x0, 0x0, 0x0, 0x0)
 /root/devops-dory-engine/Codes/Backend/dory-engine/dory/git.go:134 +0x7bd