Fix build with clang.

PR:		ports/158177 (after fixing a typo :)
Submitted by:	Niclas Zeising <niclas.zeising@gmail.com>

www/squirm/Makefile

@@ -16,6 +16,8 @@ COMMENT=	A fast & configurable redirector for the Squid
 
 RUN_DEPENDS=	${LOCALBASE}/sbin/squid:${PORTSDIR}/www/squid
 
+USE_CSTD=	gnu89
+
 SQUID_UID?=	squid
 SQUID_GID?=	squid
 

www/squirm/files/patch-squirm.c

@@ -0,0 +1,11 @@
+--- squirm.c.orig	2011-06-23 00:02:30.000000000 +0200
++++ squirm.c	2011-06-23 00:02:46.000000000 +0200
+@@ -88,7 +88,7 @@
+      print buff to stdout
+   */
+   if(strlen(in_buff->url) <= 4) {
+-    logprint(LOG_FAIL, "strlen in_buff->url = [%d] in main()\n", 
++    logprint(LOG_FAIL, "strlen in_buff->url = [%zu] in main()\n", 
+ 	strlen(in_buff->url));
+     return 1;
+   }