[gnome-screensaver] Fix building without XF86VMODE gamma

[William Jon McCann <mccann src gnome org>]

commit a11a84504074e0b33ba3d1c2597e9b12c9022d00
Author: William Jon McCann <jmccann redhat com>
Date:   Mon Jun 21 15:24:04 2010 -0400

    Fix building without XF86VMODE gamma
    
    Based on patch from Wouter Bolsterlee.
    https://bugzilla.gnome.org/show_bug.cgi?id=620747

 src/gs-fade.c |   15 +++++++--------
 1 files changed, 7 insertions(+), 8 deletions(-)
---
diff --git a/src/gs-fade.c b/src/gs-fade.c
index 89ecb5d..57b3718 100644
--- a/src/gs-fade.c
+++ b/src/gs-fade.c
@@ -271,10 +271,10 @@ gs_fade_set_enabled (GSFade  *fade,
         }
 }
 
+#ifdef HAVE_XF86VMODE_GAMMA
 static gboolean
 gamma_fade_setup (GSFade *fade, int screen_idx)
 {
-#ifdef HAVE_XF86VMODE_GAMMA
         gboolean         res;
         struct GSFadeScreenPrivate *screen_priv;
 
@@ -351,10 +351,9 @@ gamma_fade_setup (GSFade *fade, int screen_idx)
         return TRUE;
  FAIL:
 
-#endif /* HAVE_XF86VMODE_GAMMA */
-
         return FALSE;
 }
+#endif /* HAVE_XF86VMODE_GAMMA */
 
 static void
 screen_fade_finish (GSFade *fade, int screen_idx)
@@ -380,12 +379,12 @@ screen_fade_finish (GSFade *fade, int screen_idx)
         screen_priv->num_ramps = 0;
 }
 
+#ifdef HAVE_XF86VMODE_GAMMA
 static gboolean
 gamma_fade_set_alpha_gamma (GSFade *fade,
                             int screen_idx,
                             gdouble alpha)
 {
-#ifdef HAVE_XF86VMODE_GAMMA
         struct GSFadeScreenPrivate *screen_priv;
         gboolean res;
 
@@ -393,24 +392,24 @@ gamma_fade_set_alpha_gamma (GSFade *fade,
         res = xf86_whack_gamma (screen_idx, screen_priv, alpha);
 
         return TRUE;
-#else
-        return FALSE;
-#endif /* HAVE_XF86VMODE_GAMMA */
 }
+#endif /* HAVE_XF86VMODE_GAMMA */
 
 static void
 check_gamma_extension (GSFade *fade, int screen_idx)
 {
-#ifdef HAVE_XF86VMODE_GAMMA
         struct GSFadeScreenPrivate *screen_priv;
+#ifdef HAVE_XF86VMODE_GAMMA
         int      event;
         int      error;
         int      major;
         int      minor;
         gboolean res;
+#endif /* HAVE_XF86VMODE_GAMMA */
 
         screen_priv = &fade->priv->screen_priv[screen_idx];
 
+#ifdef HAVE_XF86VMODE_GAMMA
         res = XF86VidModeQueryExtension (GDK_DISPLAY (), &event, &error);
         if (! res)
                 goto fade_none;