[gimp/metadata-browser] libgimpwidgets: emit GimpButton::extended-clicked() also on MOD2-click

[Roman Joost <romanofski src gnome org>]

commit ba4845bff0c324e7be4b177ea7d6ec2fa9a02334
Author: Michael Natterer <mitch gimp org>
Date:   Thu Oct 6 22:24:41 2011 +0200

    libgimpwidgets: emit GimpButton::extended-clicked() also on MOD2-click
    
    it doesn't hurt on Win/X11 and is needed on OSX for Command-click.

 libgimpwidgets/gimpbutton.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgimpwidgets/gimpbutton.c b/libgimpwidgets/gimpbutton.c
index 92b4403..92e9f7c 100644
--- a/libgimpwidgets/gimpbutton.c
+++ b/libgimpwidgets/gimpbutton.c
@@ -144,7 +144,7 @@ static void
 gimp_button_clicked (GtkButton *button)
 {
   if (GIMP_BUTTON (button)->press_state &
-      (GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK))
+      (GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK | GDK_MOD2_MASK))
     {
       g_signal_stop_emission_by_name (button, "clicked");