Whenever git returns the error "The previous cherry-pick is now empty", we would
previously continue the rebase; this works for rebase because it behaves the
same as "git rebase --skip" in this case. That's not true for cherry-pick
though; if you continue a cherry-pick where the current commit is empty, it will
return the same error again, causing lazygit to be stuck in an endless loop.
Fix this by skipping instead of continuing; this shouldn't make a difference for
rebase, but works for cherry-pick.
Theoretically we could have a similar problem for revert (if you are trying to
revert a commit that has already been undone through some other means); this
should then be fixed in the same way with this change. However, the change is
not relevant for revert because git returns a different error in this case.
e858bad3f8