Fix build of databases/soci w/ clang 4.0 and later and on arm6, arm7.

Adds upstream patch to fix

backends/mysql/session.cpp:202:22: error: ordered comparison between pointer and zero ('int *' and 'int')
            if (port < 0)

PR:		222651 216074
Reported by:	jbeich, Neel Chauhan
Reviewed by:	jlaffaye
Approved by:	tcberner (mentor)
Obtained from:	upstream
Differential Revision:	https://reviews.freebsd.org/D13769

databases/soci/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME=	soci
 PORTVERSION=	3.2.2
-PORTREVISION=	7
+PORTREVISION=	8
 CATEGORIES=	databases
 MASTER_SITES=	SF/${PORTNAME}/${PORTNAME}/${PORTNAME}-${PORTVERSION}
 
@@ -13,9 +13,6 @@ COMMENT=	C++ Database Access Library
 LICENSE=	BSL
 LICENSE_FILE=	${WRKSRC}/LICENSE_1_0.txt
 
-BROKEN_armv6=		fails to compile: backends/mysql/session.cpp:202:22: error: ordered comparison between pointer and zero ('int *' and 'int')
-BROKEN_armv7=		fails to compile: backends/mysql/session.cpp:202:22: error: ordered comparison between pointer and zero ('int *' and 'int')
-
 USES=		cmake zip
 CMAKE_ARGS+=	-DWITH_ORACLE:BOOL=OFF
 USE_LDCONFIG=	yes

databases/soci/files/patch-backends_mysql_session.cpp

@@ -0,0 +1,14 @@
+Patch obtained from upstream 
+https://github.com/SOCI/soci/commit/165737c4be7d6c9acde92610b92e8f42a4cfe933
+
+--- backends/mysql/session.cpp.orig	2018-01-04 20:29:49 UTC
++++ backends/mysql/session.cpp
+@@ -199,7 +199,7 @@ void parse_connect_string(const string &
+                 throw soci_error(err);
+             }
+             *port = std::atoi(val.c_str());
+-            if (port < 0)
++            if (*port < 0)
+             {
+                 throw soci_error(err);
+             }