[gnome-shell/gnome-3-4] add missing _shell_link_to_shell_js() declaration

[Guillaume Desmottes <gdesmott src gnome org>]

commit 98c3f6b3bf39764b663caa0b0873de84570dfece
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Tue Jun 5 09:37:59 2012 +0200

    add missing _shell_link_to_shell_js() declaration
    
    Fix missing-prototypes warning.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=677441

 src/main.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/main.c b/src/main.c
index fbd1377..f83873a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -351,6 +351,8 @@ main (int argc, char **argv)
    https://bugzilla.gnome.org/show_bug.cgi?id=670477
 */
 
+void _shell_link_to_shell_js (void);
+
 void
 _shell_link_to_shell_js (void)
 {