a couple of curses warnings on one compiler

win/curses/cursmain.c

@@ -818,6 +818,10 @@ curses_nh_poskey(int *x, int *y, int *mod)
     if (key == KEY_MOUSE) {
         key = curses_get_mouse(x, y, mod);
     }
+#else
+    nhUse(x);
+    nhUse(y);
+    nhUse(mod);
 #endif
 
     return key;

win/curses/cursmisc.c

@@ -1023,6 +1023,10 @@ curses_get_mouse(int *mousex, int *mousey, int *mod)
             }
         }
     }
+#else
+    nhUse(mousex);
+    nhUse(mousey);
+    nhUse(mod);
 #endif /* NCURSES_MOUSE_VERSION */
 
     return key;