x11/qt5/qtbase: Explicitly disable DTLS support

Now that libssl exposes DTLS1_2_VERSION, the configure check picks up
DTLS which depends on BIO_ADDR and a modified DTLSv1_listen(3) that
we currently don't support.

ok jsing rsadowski sthen

x11/qt5/qtbase/Makefile

@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.41 2021/02/01 21:27:49 sthen Exp $
+# $OpenBSD: Makefile,v 1.42 2021/03/31 17:21:17 tb Exp $
 
 DISTNAME =		qtbase-everywhere-src-${DIST_VERSION}
 QT5NAME =		Qt5 core
@@ -10,7 +10,7 @@ COMMENT-psql =		PostgresSQL plugin for Qt5
 COMMENT-sqlite2 =	SQLite 2.x plugin for Qt5
 COMMENT-tds =		TDS plugin for Qt5
 
-REVISION-main =		0
+REVISION-main =		1
 
 PKGNAME-mysql =		qt5-mysql-${VERSION}
 PKGNAME-global =	qt5-global-${VERSION}
@@ -183,6 +183,10 @@ CONFIGURE_ARGS +=	-no-ccache \
 # https://www.qt.io/blog/qt-is-relocatable (QTBUG-87220)
 CONFIGURE_ARGS +=	-no-feature-relocatable
 
+# DTLS support depends on DTLSv1_listen() having a BIO_ADDR argument
+# which LibreSSL does not currently support.
+CONFIGURE_ARGS +=	-no-feature-dtls
+
 # Don't run tests inside main build.
 # XXX It looks like affecting other Qt modules as well.
 CONFIGURE_ARGS +=	-nomake tests