refs_ref_iterator_begin(): handle GIT_REF_PARANOIA

Instead of handling `GIT_REF_PARANOIA` in
`files_ref_iterator_begin()`, handle it in
`refs_ref_iterator_begin()`, where it will cover all reference stores.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: mhagger

refs.c

@@ -1259,6 +1259,11 @@ struct ref_iterator *refs_ref_iterator_begin(
 {
 	struct ref_iterator *iter;
 
+	if (ref_paranoia < 0)
+		ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 0);
+	if (ref_paranoia)
+		flags |= DO_FOR_EACH_INCLUDE_BROKEN;
+
 	iter = refs->be->iterator_begin(refs, prefix, flags);
 
 	/*

refs/files-backend.c

@@ -1074,15 +1074,12 @@ static struct ref_iterator *files_ref_iterator_begin(
 	struct ref_iterator *loose_iter, *packed_iter;
 	struct files_ref_iterator *iter;
 	struct ref_iterator *ref_iterator;
+	unsigned int required_flags = REF_STORE_READ;
 
-	if (ref_paranoia < 0)
-		ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 0);
-	if (ref_paranoia)
-		flags |= DO_FOR_EACH_INCLUDE_BROKEN;
+	if (!(flags & DO_FOR_EACH_INCLUDE_BROKEN))
+		required_flags |= REF_STORE_ODB;
 
-	refs = files_downcast(ref_store,
-			      REF_STORE_READ | (ref_paranoia ? 0 : REF_STORE_ODB),
-			      "ref_iterator_begin");
+	refs = files_downcast(ref_store, required_flags, "ref_iterator_begin");
 
 	iter = xcalloc(1, sizeof(*iter));
 	ref_iterator = &iter->base;