Update to nss 3.44, will be a requirement for gecko 68.

See https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.44_release_notes
Add a patch from FreeBSD via https://bugzilla.mozilla.org/show_bug.cgi?id=1551041
to fix the build on big-endian.

thanks to cwen@ for testing on macppc.

security/nss/Makefile

@@ -1,12 +1,12 @@
-# $OpenBSD: Makefile,v 1.101 2019/04/22 09:24:22 landry Exp $
+# $OpenBSD: Makefile,v 1.102 2019/05/12 17:58:20 landry Exp $
 
 COMMENT=		libraries to support development of security-enabled apps
 
-VERSION=		3.43
+VERSION=		3.44
 NSPR_VERSION=		4.19
 DISTNAME=		nss-${VERSION}
 
-SO_VERSION=		57.0
+SO_VERSION=		57.1
 .for _lib in freebl3 nss3 nssckbi nssdbm3 nssutil3 smime3 softokn3 ssl3
 SHARED_LIBS+=		${_lib} ${SO_VERSION}
 .endfor

security/nss/distinfo

@@ -1,2 +1,2 @@
-SHA256 (nss-3.43.tar.gz) = 8wvBtzMIh7dd6f7DfbwXMAF1jcQ/sJX/vEXaxAk/4so=
-SIZE (nss-3.43.tar.gz) = 23466026
+SHA256 (nss-3.44.tar.gz) = pWIOWbbu7f1aEskpi1CtkumJiyI+IU62deNvT/tbav8=
+SIZE (nss-3.44.tar.gz) = 23474704

security/nss/patches/patch-nss_lib_freebl_crypto_primitives_c

@@ -0,0 +1,18 @@
+$OpenBSD: patch-nss_lib_freebl_crypto_primitives_c,v 1.1 2019/05/12 17:58:20 landry Exp $
+
+fix build on big endian w/ gcc 4.2
+
+https://bugzilla.mozilla.org/show_bug.cgi?id=1551041
+
+Index: nss/lib/freebl/crypto_primitives.c
+--- nss/lib/freebl/crypto_primitives.c.orig
++++ nss/lib/freebl/crypto_primitives.c
+@@ -22,7 +22,7 @@ swap8b(PRUint64 value)
+     return (value);
+ }
+ 
+-#elif !defined(_MSC_VER) && !__has_builtin(__builtin_bswap64) && !((defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
++#elif defined(IS_LITTLE_ENDIAN) && !defined(_MSC_VER) && !__has_builtin(__builtin_bswap64) && !((defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
+ 
+ PRUint64
+ swap8b(PRUint64 x)