[libxslt] Add missing limits.h include

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 5415e64dc25534d22f5f70dd44f454b5f6a55ec6
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Thu Nov 2 20:29:40 2017 +0100

    Add missing limits.h include
    
    Fixes bug 789829.

 libexslt/date.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/libexslt/date.c b/libexslt/date.c
index 4b74677..6a3eb58 100644
--- a/libexslt/date.c
+++ b/libexslt/date.c
@@ -46,6 +46,7 @@
 #include "exslt.h"
 
 #include <string.h>
+#include <limits.h>
 
 #ifdef HAVE_ERRNO_H
 #include <errno.h>