Diff iterators

This refactors the diff output code so that an iterator object
can be used to traverse and generate the diffs, instead of just
the `foreach()` style with callbacks.  The code has been rearranged
so that the two styles can still share most functions.

This also replaces `GIT_REVWALKOVER` with `GIT_ITEROVER` and uses
that as a common error code for marking the end of iteration when
using a iterator style of object.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/refs.c b/src/refs.c
index 1589bc37d..211a5870c 100644
--- a/src/refs.c
+++ b/src/refs.c
@@ -1643,7 +1643,6 @@ int git_reference_normalize_name(
 			}
 		}
 
-
 		*buffer_out++ = *current++;
 		buffer_size--;
 	}