[gtk] win32: One more build fix

[Matthias Clasen <matthiasc src gnome org>]

commit 07988fc17f46b0b618e9ec5badb7b68d94b1c1fd
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Feb 9 23:04:10 2020 -0500

    win32: One more build fix

 gdk/win32/gdkevents-win32.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gdk/win32/gdkevents-win32.c b/gdk/win32/gdkevents-win32.c
index f878684712..56541e71e7 100644
--- a/gdk/win32/gdkevents-win32.c
+++ b/gdk/win32/gdkevents-win32.c
@@ -766,7 +766,7 @@ print_event_state (guint state)
 void
 _gdk_win32_print_event (const GdkEvent *event)
 {
-  gchar *kvname;
+  const char *kvname;
 
   g_print ("%s%*s===> ", (debug_indent > 0 ? "\n" : ""), debug_indent, "");
   switch (event->any.type)