[gnome-nibbles] Only check keyboard shortcuts for actual players

[Bryan Quigley <bryanquigs src gnome org>]

commit 3d4d9087ce20b68e1a432e4a4c70a3e1b4f1bfed
Author: Bryan Quigley <bryanquigs src gnome org>
Date:   Sun Feb 16 00:02:01 2014 -0500

    Only check keyboard shortcuts for actual players

 src/games-controls.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/games-controls.c b/src/games-controls.c
index df643fb..6d6209f 100644
--- a/src/games-controls.c
+++ b/src/games-controls.c
@@ -29,6 +29,7 @@
 #include "games-controls.h"
 
 extern GSettings *worm_settings[NUMWORMS];
+extern GSettings *settings;
 extern GtkWidget *window;
 
 enum {
@@ -90,7 +91,7 @@ accel_edited_cb (GtkCellRendererAccel *cell,
   }
 
   /* Duplicate key check */
-  for (i = 0; i < NUMWORMS; i++) {
+  for (i = 0; i <  g_settings_get_int(settings, "players"); i++) {
     if (g_settings_get_int (worm_settings[i], "key-up") == keyval ||
         g_settings_get_int (worm_settings[i], "key-down") == keyval ||
         g_settings_get_int (worm_settings[i], "key-left") == keyval ||