Fix warnings if no X extension is available.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@1397 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CIrrDeviceLinux.cpp

@@ -173,9 +173,11 @@ bool CIrrDeviceLinux::createWindow()
 
 	if (CreationParams.Fullscreen)
 	{
+		#if defined(_IRR_LINUX_X11_VIDMODE_) || defined(_IRR_LINUX_X11_RANDR_)
 		s32 eventbase, errorbase;
 		s32 bestMode = -1;
 		s32 defaultDepth=DefaultDepth(display,screennr);
+		#endif
 
 		#ifdef _IRR_LINUX_X11_VIDMODE_
 		if (XF86VidModeQueryExtension(display, &eventbase, &errorbase))
@@ -1081,8 +1083,10 @@ video::IVideoModeList* CIrrDeviceLinux::getVideoModeList()
 		}
 		if (display)
 		{
+			#if defined(_IRR_LINUX_X11_VIDMODE_) || defined(_IRR_LINUX_X11_RANDR_)
 			s32 eventbase, errorbase;
 			s32 defaultDepth=DefaultDepth(display,screennr);
+			#endif
 
 			#ifdef _IRR_LINUX_X11_VIDMODE_
 			if (XF86VidModeQueryExtension(display, &eventbase, &errorbase))