[vte] widget: Fix debug output to use the event wrapper

[Christian Persch <chpe src gnome org>]

commit 56132ed80fcff068769e85888278d4587d26151e
Author: Christian Persch <chpe src gnome org>
Date:   Fri May 1 23:08:42 2020 +0200

    widget: Fix debug output to use the event wrapper

 src/vte.cc         | 2 +-
 src/vteinternal.hh | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/src/vte.cc b/src/vte.cc
index 82f758f8..90f5adef 100644
--- a/src/vte.cc
+++ b/src/vte.cc
@@ -4554,7 +4554,7 @@ Terminal::widget_key_press(KeyEvent const& event)
                                "Keypress, modifiers=0x%x, "
                                "keyval=0x%x, raw string=`%s'.\n",
                                m_modifiers,
-                                 keyval, ((GdkEventKey*)event.platform_event())->string);
+                                 keyval, event.string());
 
                /* We steal many keypad keys here. */
                if (!m_im_preedit_active) {
diff --git a/src/vteinternal.hh b/src/vteinternal.hh
index 1b934106..d1b19d7f 100644
--- a/src/vteinternal.hh
+++ b/src/vteinternal.hh
@@ -361,6 +361,11 @@ public:
         constexpr auto const is_key_press()   const noexcept { return type() == Type::eKEY_PRESS;   }
         constexpr auto const is_key_release() const noexcept { return type() == Type::eKEY_RELEASE; }
 
+        auto const string() const noexcept
+        {
+                return reinterpret_cast<GdkEventKey*>(platform_event())->string;
+        }
+
 private:
         unsigned m_modifiers;
         unsigned m_keyval;