rebase -m: don't print exit code 2 when merge fails
rebase -m: don't print exit code 2 when merge fails

When the merge strategy fails, a message suggesting the user to try
another strategy is displayed. Remove the "$rv" (which is always equal
to "2" in this case) from that message.

Signed-off-by: Martin von Zweigbergk <4a0689660d2c85c65ee5252dabed282f8fad3a91@gmail.com>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git