Bug 615359 CheckForFullscreenWindow is only used ifdef XP_WIN

r=neil

--HG--
extra : rebase_source : c9d1bc55b9f4dee9a17e4e58f73fecfbf73a1104

xpfe/appshell/src/nsAppShellService.cpp

@@ -287,6 +287,7 @@ nsAppShellService::CalculateWindowZLevel(nsIXULWindow *aParent,
   return zLevel;
 }
 
+#ifdef XP_WIN
 /*
  * Checks to see if any existing window is currently in fullscreen mode.
  */
@@ -323,6 +324,7 @@ CheckForFullscreenWindow()
   }
   return PR_FALSE;
 }
+#endif
 
 /*
  * Just do the window-making part of CreateTopLevelWindow