Splash.c: add nxagentHaveSplashWindow helper

nx-X11/programs/Xserver/hw/nxagent/NXdispatch.c

@@ -330,7 +330,7 @@ Reply   Total	Cached	Bits In			Bits Out		Bits/Reply	  Ratio
 
         clientReady[0] = 0;
 
-        if (nxagentSplashWindow != None || (nxagentOption(Xdmcp) == 1 && nxagentXdmcpUp == 0))
+        if (nxagentHaveSplashWindow() || (nxagentOption(Xdmcp) == 1 && nxagentXdmcpUp == 0))
         {
           #ifdef TEST
           fprintf(stderr, "******Dispatch: Requesting a timeout of [%d] Ms.\n",

nx-X11/programs/Xserver/hw/nxagent/Splash.c

@@ -160,6 +160,11 @@ void nxagentShowSplashWindow(Window parentWindow)
   #endif
 }
 
+Bool nxagentHaveSplashWindow(void)
+{
+  return (nxagentSplashWindow != None);
+}
+
 void nxagentPaintLogo(Window win, XlibGC gc, int scale, int width, int height)
 {
   int depth = DefaultDepth(nxagentDisplay, DefaultScreen(nxagentDisplay));

nx-X11/programs/Xserver/hw/nxagent/Splash.h

@@ -42,4 +42,5 @@ extern Window nxagentSplashWindow;
 extern void nxagentShowSplashWindow(Window);
 extern void nxagentRemoveSplashWindow();
 
+extern Bool nxagentHaveSplashWindow(void);
 #endif /* __Splash_H__ */

nx-X11/programs/Xserver/hw/nxagent/Window.c

@@ -1447,7 +1447,7 @@ void nxagentConfigureWindow(WindowPtr pWin, unsigned int mask)
    *
    *  else if (mask & CWStackMode)
    *  {
-   *    if (nxagentSplashWindow)
+   *    if (nxagentHaveSplashWindow())
    *    {
    *      valuemask = CWStackMode;
    *