$OpenBSD: patch-src_string_func_h,v 1.3 2015/04/15 01:39:16 bentley Exp $
Don't use openttd's internal copy of strcasestr().
--- src/string_func.h.orig	Thu Apr  2 21:51:26 2015
+++ src/string_func.h	Thu Apr  2 21:54:19 2015
@@ -250,7 +250,7 @@ static inline bool IsWhitespace(WChar c)
 #endif
 
 /* strcasestr is available for _GNU_SOURCE, BSD and some Apple */
-#if defined(_GNU_SOURCE) || (defined(__BSD_VISIBLE) && __BSD_VISIBLE) || (defined(__APPLE__) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))) || defined(_NETBSD_SOURCE)
+#if defined(_GNU_SOURCE) || (defined(__BSD_VISIBLE) && __BSD_VISIBLE) || (defined(__APPLE__) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))) || defined(_NETBSD_SOURCE) || defined(__OpenBSD__)
 #	undef DEFINE_STRCASESTR
 #else
 #	define DEFINE_STRCASESTR
