[gnome-settings-daemon] wacom: Never try to create fake events with 0 keycode

[Bastien Nocera <hadess src gnome org>]

commit 09ad656ccc1e18563c26903c9c2613f33572e177
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Jul 11 12:15:01 2012 +0100

    wacom: Never try to create fake events with 0 keycode
    
    XTestFakeKeyEvent() doesn't like it.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=679736

 plugins/wacom/gsd-wacom-manager.c |   13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/plugins/wacom/gsd-wacom-manager.c b/plugins/wacom/gsd-wacom-manager.c
index 73d836c..498364d 100644
--- a/plugins/wacom/gsd-wacom-manager.c
+++ b/plugins/wacom/gsd-wacom-manager.c
@@ -1024,9 +1024,16 @@ generate_key (GsdWacomTabletButton *wbutton,
 	}
 	g_free (keys);
 
-	g_debug ("Emitting '%s' (keyval: %d, keycode: %d mods: 0x%x)",
-		 str, keyval, keycode, mods);
-	g_free (str);
+	if (keycode == 0) {
+		g_warning ("Not emitting '%s' (keyval: %d, keycode: %d mods: 0x%x), invalid keycode",
+			   str, keyval, keycode, mods);
+		g_free (str);
+		return;
+	} else {
+		g_debug ("Emitting '%s' (keyval: %d, keycode: %d mods: 0x%x)",
+			 str, keyval, keycode, mods);
+		g_free (str);
+	}
 
 	/* And send out the keys! */
 	if (is_press)