contrib: update OpenDHT

Change-Id: I88d44fe644abdb171c8815eafff49c8e6195087e

contrib/src/opendht/SHA512SUMS

-c20a0018c766ade0ad40532dfb298eba613b465a296a8dcddd7c1f73b75ef70b8611175c2bbfa3a3e49e282ccd300fe40b74fcb14efc8ca7263aa868ada9272d  opendht-8a18c591e99aace1795151bb8a1433428dabd70e.tar.gz
\ No newline at end of file
+9534847effb384e7dabd0c505abfc56662eee59ed93e248086ce0f440a8b89cfd2572ad3661246b1c08a55310823826c0edcb3143176ea1f53345de3a038d082  opendht-9c84e59bbf6d5cb4a67ebb01eac9a6f2aff8e131.tar.gz

contrib/src/opendht/fetch_and_patch.bat

 set BUILD=%SRC%..\build
 
-set OPENDHT_VERSION=8a18c591e99aace1795151bb8a1433428dabd70e
+set OPENDHT_VERSION=9c84e59bbf6d5cb4a67ebb01eac9a6f2aff8e131
 set OPENDHT_URL=https://github.com/savoirfairelinux/opendht/archive/%OPENDHT_VERSION%.tar.gz
 
 mkdir %BUILD%

contrib/src/opendht/rules.mak

 # OPENDHT
-OPENDHT_VERSION := 8a18c591e99aace1795151bb8a1433428dabd70e
+OPENDHT_VERSION := 9c84e59bbf6d5cb4a67ebb01eac9a6f2aff8e131
 OPENDHT_URL := https://github.com/savoirfairelinux/opendht/archive/$(OPENDHT_VERSION).tar.gz
 
 PKGS += opendht