[balsa/wip/gmime3: 35/197] Check that a child is a GtkLabel

[Peter Bloomfield <peterb src gnome org>]

commit c5b364097ccb546556e3c8024792a6779887155d
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Mon Jul 17 10:26:59 2017 -0400

    Check that a child is a GtkLabel
    
        * src/balsa-mime-widget-message.c (foreach_label): the only
        children that have a "populate-popup" signal are GtkLabels.

 src/balsa-mime-widget-message.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/src/balsa-mime-widget-message.c b/src/balsa-mime-widget-message.c
index 08bcf4c..9f82377 100644
--- a/src/balsa-mime-widget-message.c
+++ b/src/balsa-mime-widget-message.c
@@ -680,10 +680,9 @@ foreach_label(GtkWidget * widget, LibBalsaMessageBody * part)
     g_assert(widget != NULL);
 
     if (GTK_IS_CONTAINER(widget))
-        gtk_container_foreach(GTK_CONTAINER(widget),
+        gtk_container_foreach((GtkContainer *) widget,
                               (GtkCallback) foreach_label, part);
-    else if (g_signal_lookup("populate-popup",
-                             G_TYPE_FROM_INSTANCE(widget)))
+    else if (GTK_IS_LABEL(widget))
         g_signal_connect(widget, "populate-popup",
                          G_CALLBACK(bm_header_extend_popup), part);
 }