[dia] [warningectomy] prototype for function 'diagram_tree_show'

[Hans Breuer <hans src gnome org>]

commit 8d49deebc4f37e9c03280f92ed094874d0b47bdb
Author: Hans Breuer <hans breuer org>
Date:   Sun Nov 16 13:05:22 2014 +0100

    [warningectomy] prototype for function 'diagram_tree_show'
    
    diagram_tree_view.c:556:1: warning: no previous prototype for function 'diagram_tree_show' 
[-Wmissing-prototypes]
    diagram_tree_show (void)
    ^

 app/Makefile.am         |    1 +
 app/diagram_tree.h      |    3 +++
 app/diagram_tree_view.c |    1 +
 app/menus.c             |    3 +--
 4 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/app/Makefile.am b/app/Makefile.am
index 52f0b7e..e924a26 100644
--- a/app/Makefile.am
+++ b/app/Makefile.am
@@ -188,6 +188,7 @@ dia_core_files = \
        dia-application.h \
        dia-application.c \
        \
+       diagram_tree.h \
        diagram_tree_model.c \
        diagram_tree_model.h \
        diagram_tree_view.c \
diff --git a/app/diagram_tree.h b/app/diagram_tree.h
new file mode 100644
index 0000000..f211337
--- /dev/null
+++ b/app/diagram_tree.h
@@ -0,0 +1,3 @@
+
+void diagram_tree_show(void);
+
diff --git a/app/diagram_tree_view.c b/app/diagram_tree_view.c
index 166e9f8..cd42a91 100644
--- a/app/diagram_tree_view.c
+++ b/app/diagram_tree_view.c
@@ -32,6 +32,7 @@
 #include <lib/object.h>
 
 #include "diagram_tree_model.h"
+#include "diagram_tree.h"
 
 #include "dia-app-icons.h" /* for dia_group_icon */
 #include <lib/group.h> /* IS_GROUP */
diff --git a/app/menus.c b/app/menus.c
index 994fada..70c44c6 100644
--- a/app/menus.c
+++ b/app/menus.c
@@ -44,6 +44,7 @@
 #include "filter.h"
 #include "objchange.h"
 #include "toolbox.h"
+#include "diagram_tree.h"
 
 #define DIA_STOCK_GROUP "dia-stock-group"
 #define DIA_STOCK_UNGROUP "dia-stock-ungroup"
@@ -96,8 +97,6 @@ static const GtkActionEntry common_entries[] =
     { "HelpAbout", GTK_STOCK_ABOUT, NULL, NULL, N_("Dia version, authors, license"), G_CALLBACK 
(help_about_callback) }
 };
 
-extern void diagram_tree_show(void);
-
 /* Actions for toolbox menu */
 static const GtkActionEntry toolbox_entries[] = 
 {