ncftp: fix the build with -fno-common

OK naddy@

net/ncftp/Makefile

@@ -1,11 +1,11 @@
-# $OpenBSD: Makefile,v 1.47 2020/03/10 03:31:45 daniel Exp $
+# $OpenBSD: Makefile,v 1.48 2021/02/01 01:21:36 cwen Exp $
 
 COMMENT=	FTP client with advanced user interface
 
 DISTNAME=	ncftp-3.2.6
 CATEGORIES=	net
-HOMEPAGE=	http://www.ncftp.com/ncftp/
-REVISION=	1
+HOMEPAGE=	https://www.ncftp.com/ncftp/
+REVISION=	2
 
 # Artistic
 PERMIT_PACKAGE=	Yes

net/ncftp/patches/patch-sh_util_gpshare_c

@@ -0,0 +1,16 @@
+$OpenBSD: patch-sh_util_gpshare_c,v 1.1 2021/02/01 01:21:36 cwen Exp $
+
+Fix -fno-common build failure.
+
+Index: sh_util/gpshare.c
+--- sh_util/gpshare.c.orig
++++ sh_util/gpshare.c
+@@ -28,7 +28,7 @@
+ 
+ static int gIsAtty1 = 1, gIsAtty2 = 1;
+ extern int gLoadedBm, gBookmarkMatchMode;
+-Bookmark gBm;
++extern Bookmark gBm;
+ 
+ double
+ FileSize(double size, const char **uStr0, double *uMult0)