opensmtpd: add patch to avoid segfault on password check

srcpkgs/opensmtpd/patches/crypt_checkpass.patch

@@ -0,0 +1,37 @@
+https://github.com/OpenSMTPD/OpenSMTPD/pull/835
+
+avoid null pointer deref if crypt(3) fails and returns null
+
+include "includes.h" so HAVE_CRYPT_H is defined and crypt.h gets included
+
+--- openbsd-compat/crypt_checkpass.c
++++ openbsd-compat/crypt_checkpass.c
+@@ -1,5 +1,6 @@
+ /* OPENBSD ORIGINAL: lib/libc/crypt/cryptutil.c */
+
++#include "includes.h"
+ #include <errno.h>
+ #ifdef HAVE_CRYPT_H
+ #include <crypt.h>
+@@ -10,6 +11,8 @@
+ int
+ crypt_checkpass(const char *pass, const char *goodhash)
+ {
++       char *c;
++
+        if (goodhash == NULL)
+                goto fail;
+
+@@ -17,7 +20,11 @@ crypt_checkpass(const char *pass, const char *goodhash)
+        if (strlen(goodhash) == 0 && strlen(pass) == 0)
+                return 0;
+
+-       if (strcmp(crypt(pass, goodhash), goodhash) == 0)
++       c = crypt(pass, goodhash);
++       if (c == NULL)
++               goto fail;
++
++       if (strcmp(c, goodhash) == 0)
+                return 0;
+
+ fail:

srcpkgs/opensmtpd/template

@@ -1,7 +1,7 @@
 # Template file for 'opensmtpd'
 pkgname=opensmtpd
 version=6.0.3p1
-revision=5
+revision=6
 build_style=gnu-configure
 configure_args="--sysconfdir=/etc/smtpd --sbindir=/usr/bin
  --with-path-socket=/run --with-mantype=doc --with-pie --with-table-db