[perl-Gtk2] Fix a display bug in the custom cell renderer example

[Torsten Schönfeld <tsch src gnome org>]

commit d1cef7175027121ac91faa1594bfb41c545720b2
Author: Torsten Schönfeld <kaffeetisch gmx de>
Date:   Sun May 17 16:41:53 2009 +0200

    Fix a display bug in the custom cell renderer example
    
    Set the height request of the cell editable to the height of the cell to avoid
    creating editables which are just one pixel in height.
---
 examples/customrenderer.pl |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/examples/customrenderer.pl b/examples/customrenderer.pl
index e4d30e2..b6a4548 100644
--- a/examples/customrenderer.pl
+++ b/examples/customrenderer.pl
@@ -92,7 +92,8 @@ sub START_EDITING {
 
 		return FALSE;
 	});
-	
+
+	$entry->set (height_request => $cell_area->height);
 	$entry->show;
 
 	return $entry;