remote: convert match_push_refs to take a struct refspec

Convert 'match_push_refs()' to take a 'struct refspec' as a parameter
instead of an array of 'const char *'.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/send-pack.c b/builtin/send-pack.c
index 7c34bf4..4923b10 100644
--- a/builtin/send-pack.c
+++ b/builtin/send-pack.c
@@ -275,7 +275,7 @@ int cmd_send_pack(int argc, const char **argv, const char *prefix)
 		flags |= MATCH_REFS_MIRROR;
 
 	/* match them up */
-	if (match_push_refs(local_refs, &remote_refs, rs.raw_nr, rs.raw, flags))
+	if (match_push_refs(local_refs, &remote_refs, &rs, flags))
 		return -1;
 
 	if (!is_empty_cas(&cas))