[gimp] app: check for GIMP_BUTTON_RELEASE_CANCEL, not GDK_BUTTON3_MASK

[Michael Natterer <mitch src gnome org>]

commit ef44bfedad3c248fba2935ff88c15efcde86d6af
Author: Michael Natterer <mitch gimp org>
Date:   Wed Nov 10 14:39:30 2010 +0100

    app: check for GIMP_BUTTON_RELEASE_CANCEL, not GDK_BUTTON3_MASK

 app/tools/gimpcagetool.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/app/tools/gimpcagetool.c b/app/tools/gimpcagetool.c
index 2a93e9e..61c4c92 100644
--- a/app/tools/gimpcagetool.c
+++ b/app/tools/gimpcagetool.c
@@ -372,7 +372,7 @@ gimp_cage_tool_button_release (GimpTool              *tool,
 
   gimp_draw_tool_pause (GIMP_DRAW_TOOL (ct));
 
-  if (state & GDK_BUTTON3_MASK)
+  if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
     {
       /* operation canceled, do nothing */
     }