shells/fish: Fix for hangs on FreeBSD 10.1+

Fix for hangs on FreeBSD 10.1+ due to WCHAR_T missing as an alias for
UCS-4-INTERNAL.

[1] https://github.com/fish-shell/fish-shell/issues/1741

PR:		196661
Submitted by:	David Adam <zanchey ucc.gu.uwa.edu.au>
Approved by:	maintainer <freebsd.users gmail com>

shells/fish/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME=	fish
 PORTVERSION=	2.1.1
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	shells
 MASTER_SITES=	http://fishshell.com/files/${PORTVERSION}/
 

shells/fish/files/patch-env__universal__common.cpp

@@ -0,0 +1,14 @@
+# Description: Hangs on freebsd when starting shell
+# Issue ID: https://github.com/fish-shell/fish-shell/issues/1741
+# TODO: Remove after 2.1.2 update
+
+--- env_universal_common.cpp.orig	2015-04-18 11:58:07 UTC
++++ env_universal_common.cpp
+@@ -151,6 +151,7 @@ static const char *iconv_wide_names_4[]=
+ {
+     "wchar_t", "WCHAR_T",
+     "wchar", "WCHAR",
++    "UCS-4-INTERNAL", 
+     "ucs-4", "UCS-4",
+     "ucs4", "UCS4",
+     "utf-32", "UTF-32",