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refs: pass NULL to resolve_ref_unsafe() if hash is not needed

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This allows us to get rid of some write-only variables, among them seven
SHA1 buffers.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe
2017-09-23 11:45:04 +02:00
committed by Junio C Hamano
parent e691b027b6
commit 744c040b19
14 changed files with 19 additions and 38 deletions
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3
builtin/symbolic-ref.c
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@ -12,9 +12,8 @@ static const char * const git_symbolic_ref_usage[] = {
static int check_symref(const char *HEAD, int quiet, int shorten, int print)
{
unsigned char sha1[20];
int flag;
const char *refname = resolve_ref_unsafe(HEAD, 0, sha1, &flag);
const char *refname = resolve_ref_unsafe(HEAD, 0, NULL, &flag);
if (!refname)
die("No such ref: %s", HEAD);