[gnome-system-monitor] Initialize scroll-preserve related variables. https://bugzilla.gnome.org/show_bug.cgi?id=700305

[Robert Roth <robertroth src gnome org>]

commit 826f95d2200f0ed44c6d78efdd2c0a20998e8c60
Author: Robert Roth <robert roth off gmail com>
Date:   Tue May 14 23:48:37 2013 +0300

    Initialize scroll-preserve related variables.
    https://bugzilla.gnome.org/show_bug.cgi?id=700305

 src/proctable.cpp |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/proctable.cpp b/src/proctable.cpp
index f9ac6ac..400e4d1 100644
--- a/src/proctable.cpp
+++ b/src/proctable.cpp
@@ -410,7 +410,6 @@ proctable_new (ProcmanApp * const app)
         }
     }
     app->tree = proctree;
-    app->top_of_tree = NULL;
     app->last_vscroll_max = 0;
     app->last_vscroll_value = 0;