technical doc: add a design doc for hash function transition

diff --git a/revision.c b/revision.c
index 1520f69d93583972a71d5ece7870b598c9060555..613168d397bcce6f2ddb2cf074707f3aff79f8c3 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -2248,11 +2248,10 @@ static int handle_revision_pseudo_opt(const char *submodule,
 
 static void NORETURN diagnose_missing_default(const char *def)
 {
-       unsigned char sha1[20];
        int flags;
        const char *refname;
 
-       refname = resolve_ref_unsafe(def, 0, sha1, &flags);
+       refname = resolve_ref_unsafe(def, 0, NULL, &flags);
        if (!refname || !(flags & REF_ISSYMREF) || (flags & REF_ISBROKEN))
                die(_("your current branch appears to be broken"));