proftpd: upgrade 1.3.9b -> 1.3.9c

Changelog:
===========
- Issue 2135 - ExecEnviron values not passed due to regression since 1.3.8.d.
- Issue 2146 - Stack buffer overflow in MLSD/MLST handling for long path names.
- Issue 2158 - MaxTransfersPerUser no longer enforces configured limits.
- Issue 2163 - AdminControlsACLs for config, get actions not honored as they
  should be.
- Issue 2166 - Memcached/Redis-cached JSON TLS session/OCSP entries decoded
  into fixed buffers without bounds checking.
- Issue 2173 - RewriteMap unescape builtin use causes one-byte out-of-bounds
  write, fails to reject illegal characters.
- Issue 2188 - SQL group name lookup concatenates client-provided group names
  without escaping.
- Issue 2190 - Authenticated SFTP sessions can overflow the SFTP packet buffer.
- Issue 2210 - Default Controls socket ACLs unintentionally allow all users
  access for sending Controls requests.

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
(cherry picked from commit c13b1c4115)
Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>

meta-networking/recipes-daemons/proftpd/proftpd_1.3.9c.bb

@@ -4,7 +4,7 @@ HOMEPAGE = "http://www.proftpd.org"
 LICENSE = "GPL-2.0-or-later"
 LIC_FILES_CHKSUM = "file://COPYING;md5=fb0d1484d11915fa88a6a7702f1dc184"
 
-SRCREV = "390b21555268bbc64b66d2dfa7ae40476419b80f"
+SRCREV = "78a1bea439969913d7002bfb16ee7f0f60e262b4"
 BRANCH = "1.3.9"
 
 SRC_URI = "git://github.com/proftpd/proftpd.git;branch=${BRANCH};protocol=https;tag=v${PV} \