[gnome-control-center] Remove a redundant variable

[Matthias Clasen <matthiasc src gnome org>]

commit e5eb152ff9323ad258224f2e7bdb1be1184df873
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Jan 17 15:42:26 2011 -0500

    Remove a redundant variable

 panels/universal-access/cc-ua-panel.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)
---
diff --git a/panels/universal-access/cc-ua-panel.c b/panels/universal-access/cc-ua-panel.c
index 55a290b..c9da7b5 100644
--- a/panels/universal-access/cc-ua-panel.c
+++ b/panels/universal-access/cc-ua-panel.c
@@ -323,12 +323,10 @@ static gdouble
 dpi_from_pixels_and_mm (gint pixels,
                         gint mm)
 {
-  gdouble dpi;
-
   if (mm >= 1)
     return pixels / (mm / 25.4);
   else
-    return dpi = 0;
+    return 0;
 }
 
 static gdouble