add prototype

(cherry picked from commit 438cfd3815420aab1b7a8bbaf06f3ba2c9b3fe59)

diff --git a/src/display.c b/src/display.c
index 2d3a272a7187705a05b642eb3b97134e1761fb8a..5b8eba8a7221fa04488c09fa8b24e8eaad1870e6 100644 (file)
--- a/src/display.c
+++ b/src/display.c
@@ -1,4 +1,4 @@
-/* NetHack 3.6 display.c       $NHDT-Date: 1525012604 2018/04/29 14:36:44 $  $NHDT-Branch: master $:$NHDT-Revision: 1.91 $ */
+/* NetHack 3.6 display.c       $NHDT-Date: 1525056598 2018/04/30 02:49:58 $  $NHDT-Branch: master $:$NHDT-Revision: 1.92 $ */
 /* Copyright (c) Dean Luick, with acknowledgements to Kevin Darcy */
 /* and Dave Cohrs, 1990.                                          */
 /* NetHack may be freely redistributed.  See license for details. */
@@ -124,6 +124,7 @@ STATIC_DCL void FDECL(display_warning, (struct monst *));
 
 STATIC_DCL int FDECL(check_pos, (int, int, int));
 STATIC_DCL int FDECL(get_bk_glyph, (XCHAR_P, XCHAR_P));
+STATIC_DCL int FDECL(tether_glyph, (int, int));
 
 /*#define WA_VERBOSE*/ /* give (x,y) locations for all "bad" spots */
 #ifdef WA_VERBOSE
@@ -894,6 +895,7 @@ xchar x, y;
 
 int
 tether_glyph(x, y)
+int x, y;
 {
     int tdx, tdy;
     tdx = u.ux - x;