Author: Sergei Golovan
Description: Patch fixes implicit declaration of iswdigit().
Debian-Bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1066552

--- a/src/tre/ltre_w.c
+++ b/src/tre/ltre_w.c
@@ -4,6 +4,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
+#include <wctype.h>
 #include "lua.h"
 #include "lauxlib.h"
 #include "../common.h"