rerere: Fix removal of already resolved path.
rerere: Fix removal of already resolved path.

There was an obvious thinko in memmove() to remove an entry that
was resolved from the in-core data structure.

Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

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