am: don't call mailinfo if $rebasing

diff --git a/RelNotes b/RelNotes
index 766bbaf8f5a90759645200e1fc61e11d9836de49..19bb2ebbe687d9ded1a5c82d28d4410de1e2f19f 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes/1.7.9.txt
\ No newline at end of file
+Documentation/RelNotes/1.7.12.txt
\ No newline at end of file