builtin/pack-objects.c: return from create_object_entry()

A new caller in the next commit will want to immediately modify the
object_entry structure created by create_object_entry(). Instead of
forcing that caller to wastefully look-up the entry we just created,
return it from create_object_entry() instead.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/pack-objects.c

@@ -1516,13 +1516,13 @@ static int want_object_in_pack(const struct object_id *oid,
 	return 1;
 }
 
-static void create_object_entry(const struct object_id *oid,
-				enum object_type type,
-				uint32_t hash,
-				int exclude,
-				int no_try_delta,
-				struct packed_git *found_pack,
-				off_t found_offset)
+static struct object_entry *create_object_entry(const struct object_id *oid,
+						enum object_type type,
+						uint32_t hash,
+						int exclude,
+						int no_try_delta,
+						struct packed_git *found_pack,
+						off_t found_offset)
 {
 	struct object_entry *entry;
 
@@ -1539,6 +1539,8 @@ static void create_object_entry(const struct object_id *oid,
 	}
 
 	entry->no_try_delta = no_try_delta;
+
+	return entry;
 }
 
 static const char no_closure_warning[] = N_(