[LyX/master] Forgot this file in the last commit

[Kornel Benko]

commit 71088f5b1c15ee5b3c6f9c2d00c55a9209861b26
Author: Kornel Benko <kor...@lyx.org>
Date:   Fri Oct 24 17:29:12 2014 +0200

    Forgot this file in the last commit

diff --git a/src/version.cpp b/src/version.cpp
index 4d46e14..577bd2b 100644
--- a/src/version.cpp
+++ b/src/version.cpp
@@ -12,6 +12,7 @@
 #include <config.h>
 #if ! defined(LYX_DATE)
        #include <lyx_date.h>
+       #include <lyx_commit_hash.h>
 #endif
 
 ///