[libgd] main-icon-box: Silence -Wparentheses

[Debarshi Ray <debarshir src gnome org>]

commit 63d13ea49990ac23a214acc4f8a7c0d8b0405cfd
Author: Debarshi Ray <debarshir gnome org>
Date:   Tue Aug 1 15:02:55 2017 +0200

    main-icon-box: Silence -Wparentheses

 libgd/gd-main-icon-box.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgd/gd-main-icon-box.c b/libgd/gd-main-icon-box.c
index 6d3b939..341df19 100644
--- a/libgd/gd-main-icon-box.c
+++ b/libgd/gd-main-icon-box.c
@@ -386,7 +386,7 @@ gd_main_icon_box_button_release_event (GtkWidget *widget, GdkEventButton *event)
     }
 
   if (!priv->selection_mode &&
-      (event->button == GDK_BUTTON_PRIMARY && (event->state & GDK_CONTROL_MASK) != 0 ||
+      ((event->button == GDK_BUTTON_PRIMARY && (event->state & GDK_CONTROL_MASK) != 0) ||
        event->button == GDK_BUTTON_SECONDARY))
     {
       g_signal_emit_by_name (self, "selection-mode-request");