first ref(), then unref() in Layout::setBgColor()

In case new and old bgColor are the same thing, we need to avoid to
delete bgColor by first unref()ing it.

1 files changed, 3 insertions, 1 deletions

diff --git a/dw/layout.cc b/dw/layout.cc
index 1835ab96..e33da4d1 100644
--- a/dw/layout.cc
+++ b/dw/layout.cc
@@ -611,11 +611,13 @@ void Layout::updateCursor ()
 
 void Layout::setBgColor (style::Color *color)
 {
+   color->ref ();
+
    if (bgColor)
       bgColor->unref ();
 
    bgColor = color;
-   bgColor->ref ();
+
    if (view)
       view->setBgColor (bgColor);
 }