[vte] widget: Fix missing include

[Christian Persch <chpe src gnome org>]

commit 61e1e59e5b23409fd072dcf1374f0d58e1957b84
Author: Olivier Fourdan <ofourdan redhat com>
Date:   Wed Oct 7 12:00:38 2020 +0200

    widget: Fix missing include
    
    Fixes: https://gitlab.gnome.org/GNOME/vte/-/issues/289

 src/widget.cc | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/widget.cc b/src/widget.cc
index 98aa942b..c4dfc53a 100644
--- a/src/widget.cc
+++ b/src/widget.cc
@@ -24,6 +24,7 @@
 
 #include <exception>
 #include <new>
+#include <stdexcept>
 #include <string>
 
 #include "cxx-utils.hh"