[Qemu-trivial] [PATCH] ui/gtk: Fix build with older versions of gtk

[Thomas Huth <thuth@redhat.com>]

GDK_KEY_Delete is only defined with gtk version 2.22 and newer,
on older versions this key was called GDK_Delete instead.
Since this is the case for all GDK_KEY_* defines, change the
already existing preprocessor check there to test for version 2.22,
so we know that we can remove this code block in case we require
that version as a minimum one day.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 ui/gtk.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ui/gtk.c b/ui/gtk.c
index ca737c4..e816428 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -94,7 +94,7 @@
 #define GDK_IS_WIN32_DISPLAY(dpy) (dpy == dpy)
 #endif
 
-#ifndef GDK_KEY_0
+#if !GTK_CHECK_VERSION(2, 22, 0)
 #define GDK_KEY_0 GDK_0
 #define GDK_KEY_1 GDK_1
 #define GDK_KEY_2 GDK_2
@@ -104,6 +104,7 @@
 #define GDK_KEY_plus GDK_plus
 #define GDK_KEY_minus GDK_minus
 #define GDK_KEY_Pause GDK_Pause
+#define GDK_KEY_Delete GDK_Delete
 #endif
 
 /* Some older mingw versions lack this constant or have
-- 
1.8.3.1