[PATCH v3 3/4] read_loose_refs(): simplify function logic

[Michael Haggerty <mhagger@alum.mit.edu>]

Make it clearer that there are two possible ways to read the
reference, but that we handle read errors uniformly regardless of
which way it was read.

This refactoring also makes the following change easier to implement.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 refs.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/refs.c b/refs.c
index 47e4e53..6736424 100644
--- a/refs.c
+++ b/refs.c
@@ -1308,19 +1308,24 @@ static void read_loose_refs(const char *dirname, struct ref_dir *dir)
 					 create_dir_entry(refs, refname.buf,
 							  refname.len, 1));
 		} else {
+			int read_ok;
+
 			if (*refs->name) {
 				hashclr(sha1);
 				flag = 0;
-				if (resolve_gitlink_ref(refs->name, refname.buf, sha1) < 0) {
-					hashclr(sha1);
-					flag |= REF_ISBROKEN;
-				}
-			} else if (read_ref_full(refname.buf,
-						 RESOLVE_REF_READING,
-						 sha1, &flag)) {
+				read_ok = !resolve_gitlink_ref(refs->name,
+							       refname.buf, sha1);
+			} else {
+				read_ok = !read_ref_full(refname.buf,
+							 RESOLVE_REF_READING,
+							 sha1, &flag);
+			}
+
+			if (!read_ok) {
 				hashclr(sha1);
 				flag |= REF_ISBROKEN;
 			}
+
 			if (check_refname_format(refname.buf,
 						 REFNAME_ALLOW_ONELEVEL)) {
 				hashclr(sha1);
-- 
2.1.4