devel/p5-AnyEvent-Subprocess: add small fix

There is a bug in AnyEvent::Subprocess since 2015,
which requires a one line patch and unfortunately
the authors of AnyEvent::Subprocess still did not fix it.
This bug produces a warning on resent versions of Moose during startup:

Passing a list of values to enum is deprecated. Enum values should be wrapped
in an arrayref.
at /usr/local/lib/perl5/site_perl/AnyEvent/Subprocess/Types.pm line 42.

See also: https://github.com/zhmylove/pwsvpn

Reported by:	Sergei Zhmylove

devel/p5-AnyEvent-Subprocess/Makefile

@@ -2,7 +2,7 @@
 
 PORTNAME=	AnyEvent-Subprocess
 PORTVERSION=	1.102912
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	devel perl5
 MASTER_SITES=	CPAN
 PKGNAMEPREFIX=	p5-

devel/p5-AnyEvent-Subprocess/files/patch-lib_AnyEvent_Subprocess_Types.pm

@@ -0,0 +1,11 @@
+--- lib/AnyEvent/Subprocess/Types.pm.orig	2011-02-25 19:36:55 UTC
++++ lib/AnyEvent/Subprocess/Types.pm
+@@ -39,7 +39,7 @@ coerce SubprocessCode, from ArrayRef[Str], via {
+ subtype CodeList, as ArrayRef[CodeRef];
+ coerce CodeList, from CodeRef, via { [$_] };
+
+-enum WhenToCallBack, qw/Readable Line/;
++enum WhenToCallBack, [qw/Readable Line/];
+
+ 1;
+