[PATCH v2 07/12] attr.c: simplify macroexpand_one()

[Junio C Hamano <gitster@pobox.com>]

The double-loop wants to do an early return immediately when one
matching macro is found.  Eliminate the extra variable 'a' used for
that purpose and rewrite the "assign the found item to 'a' to make
it non-NULL and force the loop(s) to terminate" with a direct return
from there.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 attr.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/attr.c b/attr.c
index 95416d3..7bfeef3 100644
--- a/attr.c
+++ b/attr.c
@@ -701,24 +701,21 @@ static int fill(const char *path, int pathlen, int basename_offset,
 static int macroexpand_one(int nr, int rem)
 {
 	struct attr_stack *stk;
-	struct match_attr *a = NULL;
 	int i;
 
 	if (check_all_attr[nr].value != ATTR__TRUE ||
 	    !check_all_attr[nr].attr->maybe_macro)
 		return rem;
 
-	for (stk = attr_stack; !a && stk; stk = stk->prev)
-		for (i = stk->num_matches - 1; !a && 0 <= i; i--) {
+	for (stk = attr_stack; stk; stk = stk->prev) {
+		for (i = stk->num_matches - 1; 0 <= i; i--) {
 			struct match_attr *ma = stk->attrs[i];
 			if (!ma->is_macro)
 				continue;
 			if (ma->u.attr->attr_nr == nr)
-				a = ma;
+				return fill_one("expand", ma, rem);
 		}
-
-	if (a)
-		rem = fill_one("expand", a, rem);
+	}
 
 	return rem;
 }
-- 
2.8.2-748-gfb85f76