[LyX/master] Fix compilation after afc34c7a

[Enrico Forestieri]

commit 480f8d3115fd918472068ef344e7f9d56ede9eb1
Author: Enrico Forestieri <for...@lyx.org>
Date:   Tue May 20 00:43:46 2014 +0200

    Fix compilation after afc34c7a

diff --git a/src/support/lstrings.cpp b/src/support/lstrings.cpp
index a2487f8..a43feeb 100644
--- a/src/support/lstrings.cpp
+++ b/src/support/lstrings.cpp
@@ -25,6 +25,7 @@
 #include <cstdio>
 #include <cstring>
 #include <algorithm>
+#include <typeinfo>
 
 using namespace std;