open-iscsi: apply patch for musl's getopt

See #5465

srcpkgs/open-iscsi/patches/fix-musl.patch

@@ -0,0 +1,40 @@
+Patch taken from alpinelinux:
+http://git.alpinelinux.org/cgit/aports/commit/?id=3d5e7f0642490428f87b2aa499cd830043b42b18
+
+Do not rely on optopt for checking if there is an error.
+Instead check if getopt() returns a '?' and set a flag
+that indicates an argument error.
+
+Later check this flag and error out, if it is set.
+
+--- usr/iscsiadm.c	2016-09-29 20:33:24.000000000 +0200
++++ usr/iscsiadm.c	2017-01-08 03:03:20.648496369 +0100
+@@ -3263,6 +3263,7 @@
+ 	int packet_size=32, ping_count=1, ping_interval=0;
+ 	int do_discover = 0, sub_mode = -1;
+ 	int portal_type = -1;
++	int argerror = 0;
+ 	struct sigaction sa_old;
+ 	struct sigaction sa_new;
+ 	struct list_head ifaces;
+@@ -3426,6 +3427,10 @@
+ 			break;
+ 		case 'h':
+ 			usage(0);
++		case '?':
++			log_error("unrecognized character '%c'", optopt);
++			argerror = 1;
++			break;
+ 		}
+ 
+ 		if (name && value) {
+@@ -3441,8 +3446,7 @@
+ 		}
+ 	}
+ 
+-	if (optopt) {
+-		log_error("unrecognized character '%c'", optopt);
++	if (argerror) {
+ 		rc = ISCSI_ERR_INVAL;
+ 		goto free_ifaces;
+ 	}

srcpkgs/open-iscsi/template

@@ -1,7 +1,7 @@
 # Template file for 'open-iscsi'
 pkgname=open-iscsi
 version=2.0.874
-revision=1
+revision=2
 conf_files="/etc/iscsi/iscsid.conf /etc/iscsi/initiatorname.iscsi"
 build_style=gnu-configure
 hostmakedepends="automake libtool"
@@ -12,7 +12,6 @@ license="GPL-2"
 homepage="http://www.open-iscsi.com/"
 distfiles="https://github.com/${pkgname}/${pkgname}/archive/${version}.tar.gz"
 checksum=d0071bf00fdf6591cd6ea5caf89fa57ada03d263da1f80f17deff76acf7419e1
-#nocross=yes
 
 case "$XBPS_TARGET_MACHINE" in
 	*-musl) CFLAGS+="-D_LINUX_IF_ETHER_H";;