[gnome-software] trivial: Code style - check for NULL in if statement with pointer

[Robert Ancell <rancell src gnome org>]

commit b2899ccc1c91c82d2b4f3dddc190088a77e30bac
Author: Robert Ancell <robert ancell canonical com>
Date:   Tue Mar 1 15:49:02 2016 +1300

    trivial: Code style - check for NULL in if statement with pointer

 src/gs-app-row.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gs-app-row.c b/src/gs-app-row.c
index 32fa2f3..3cba9c9 100644
--- a/src/gs-app-row.c
+++ b/src/gs-app-row.c
@@ -231,7 +231,7 @@ gs_app_row_refresh (GsAppRow *app_row)
                gtk_widget_set_visible (priv->folder_label, folder != NULL);
        }
 
-       if (gs_app_get_pixbuf (priv->app))
+       if (gs_app_get_pixbuf (priv->app) != NULL)
                gs_image_set_from_pixbuf (GTK_IMAGE (priv->image),
                                          gs_app_get_pixbuf (priv->app));