xdiff: mark unused parameter in xdl_call_hunk_func()

This function is used interchangeably with xdl_emit via a function
pointer, so we can't just drop the unused parameter. Mark it to silence
-Wunused-parameter.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/xdiff/xdiffi.c b/xdiff/xdiffi.c
index 32652ded2d7c5cad87f120a13c3c6c84d6def61f..344c2dfc3eb443a721cc45b6ba3be56e9f186c97 100644 (file)
--- a/xdiff/xdiffi.c
+++ b/xdiff/xdiffi.c
@@ -973,7 +973,7 @@ void xdl_free_script(xdchange_t *xscr) {
        }
 }
 
-static int xdl_call_hunk_func(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
+static int xdl_call_hunk_func(xdfenv_t *xe UNUSED, xdchange_t *xscr, xdemitcb_t *ecb,
                              xdemitconf_t const *xecfg)
 {
        xdchange_t *xch, *xche;