Fix misspelled variable.

Change-Id: I243de23d5acee135113dc81fca6244d651a2d9a8
(cherry picked from commit 70aa7f90537916d374f57d8aafd408506f345e87)
Fix for attempted COPY of objects gt MAX_FILE_SIZE

If X-Copy-From is a manifest object, it can be bigger than MAX_FILE_SIZE.
Currently this fails with 503. It should be 413.

Bug #1158279

Change-Id: I7ec16088046c84e42d5be9c865e1338eb07845b6
(cherry picked from commit 7df43237451a50d8eade94024cd97c50621ed38a)
Merge "Fix misspelled variable." into milestone-proposed
Merge "Fix for attempted COPY of objects gt MAX_FILE_SIZE" into milestone-proposed