vidmode: build without xf86vidmodeproto

git commit f175cf45:

  vidmode: move to a separate library of its own

introduced a regression where the xserver would not build when
xf86vidmodeproto is not installed even if the configure option
"--disable-xf86vidmode" is specified.

Fix build failure when xf86vidmodeproto is not installed.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>

Xext/vidmode.c

@@ -33,6 +33,8 @@ from Kaleb S. KEITHLEY
 #include <dix-config.h>
 #endif
 
+#ifdef XF86VIDMODE
+
 #include <X11/X.h>
 #include <X11/Xproto.h>
 #include <X11/extensions/xf86vmproto.h>
@@ -2145,3 +2147,5 @@ VidModePtr VidModeInit(ScreenPtr pScreen)
 
     return VidModeGetPtr(pScreen);
 }
+
+#endif /* XF86VIDMODE */

include/vidmodestr.h

@@ -133,8 +133,10 @@ typedef struct {
     VidModeGetGammaRampSizeProcPtr    GetGammaRampSize;
 } VidModeRec, *VidModePtr;
 
+#ifdef XF86VIDMODE
 void VidModeAddExtension(Bool allow_non_local);
 VidModePtr VidModeGetPtr(ScreenPtr pScreen);
 VidModePtr VidModeInit(ScreenPtr pScreen);
+#endif /* XF86VIDMODE */
 
 #endif