Address book fix.

[Chris Edwards <cedwards wcs k12 va us>]

This was posted to the bug tracker, but I figured I would send it here as well.

This patch fixes what seems to be a left over piece of the old balsa using GnomeMDI.

diff -ur balsa.cvs/src/address-book.c balsa/src/address-book.c
--- balsa.cvs/src/address-book.c	Tue Nov 30 14:32:15 1999
+++ balsa/src/address-book.c	Tue Nov 30 15:31:36 1999
@@ -324,7 +324,7 @@
 	 * Only display this part of * the window when we're adding to a composing 
 	 * message. 
 	 */ 
-	if (!GNOME_IS_MDI((GnomeMDI *) data)) { 
+	if (GTK_IS_ENTRY((GtkEntry *) data)) { 
 		composing = TRUE; 
 		
 		box2 = gtk_vbox_new(FALSE, 5);