Merge branch 'km/avoid-non-function-return-in-rebase' into maint

"git rebase" used a POSIX shell construct FreeBSD /bin/sh does not work well with. * km/avoid-non-function-return-in-rebase: Revert "rebase: fix run_specific_rebase's use of "return" on FreeBSD" rebase: avoid non-function use of "return" on FreeBSD