[gtk] headerbar: Remove superfluous parentheses

[Timm Bäder <baedert src gnome org>]

commit 0be4d3121716180ef1bed2eda89bd81c3a5e760e
Author: Timm Bäder <mail baedert org>
Date:   Tue Nov 27 06:06:28 2018 +0100

    headerbar: Remove superfluous parentheses

 gtk/gtkheaderbar.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkheaderbar.c b/gtk/gtkheaderbar.c
index d4b500c6c2..257c8a697c 100644
--- a/gtk/gtkheaderbar.c
+++ b/gtk/gtkheaderbar.c
@@ -532,7 +532,7 @@ gtk_header_bar_reorder_css_node (GtkHeaderBar *bar,
         previous_widget = iter->widget;
     }
 
-  if ((pack_type == GTK_PACK_START))
+  if (pack_type == GTK_PACK_START)
     gtk_css_node_insert_after (gtk_widget_get_css_node (GTK_WIDGET (bar)),
                                gtk_widget_get_css_node (widget),
                                previous_widget ? gtk_widget_get_css_node (previous_widget) : NULL);