samba4: bump to version 4.4.3

Fixes a few regressions from the previous security bump.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/samba4/samba4.hash

@@ -1,2 +1,2 @@
 # Locally calculated after checking pgp signature
-sha256	eaecd41a85ebb9507b8db9856ada2a949376e9d53cf75664b5493658f6e5926a	samba-4.4.2.tar.gz
+sha256	031e6ada6d15deae6850845eed41497af32207fb679d6c6c74f19acc99d437ba	samba-4.4.3.tar.gz

package/samba4/samba4.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-SAMBA4_VERSION = 4.4.2
+SAMBA4_VERSION = 4.4.3
 SAMBA4_SITE = http://ftp.samba.org/pub/samba/stable
 SAMBA4_SOURCE = samba-$(SAMBA4_VERSION).tar.gz
 SAMBA4_INSTALL_STAGING = YES