net/bsdec2-image-upload: fix build on GCC architectures

-W\#warnings is incorrect for GCC:
cc1: error: -Werror=#warnings: No option -W#warnings

MFH:		2020Q3 (fix build blanket)

net/bsdec2-image-upload/Makefile

@@ -13,7 +13,7 @@ LICENSE_FILE=	${WRKSRC}/COPYRIGHT
 
 RUN_DEPENDS=	${LOCALBASE}/share/certs/ca-root-nss.crt:security/ca_root_nss
 
-USES=		ssl tar:tgz uidfix
+USES=		compiler ssl tar:tgz uidfix
 CFLAGS+=	-I${OPENSSLINC}
 LDFLAGS+=	-L${OPENSSLLIB}
 
@@ -23,4 +23,10 @@ MAKE_ARGS+=	BINDIR=${PREFIX}/bin
 
 PLIST_FILES=	bin/bsdec2-image-upload
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+.if ${CHOSEN_COMPILER_TYPE} == gcc
+EXTRA_PATCHES=	${FILESDIR}/extra-patch-Makefile
+.endif
+
+.include <bsd.port.post.mk>

net/bsdec2-image-upload/files/extra-patch-Makefile

@@ -0,0 +1,10 @@
+--- Makefile.orig	2020-07-22 09:29:11 UTC
++++ Makefile
+@@ -2,7 +2,6 @@ PROG=	bsdec2-image-upload
+ SRCS=	main.c
+ MAN	=
+ WARNS	?=	3
+-CFLAGS	+=	-Wno-error=\#warnings
+ BINDIR	?=	/usr/local/bin
+ LDADD	+=	-lcrypto -lssl
+