gnupg2 @2.2.3: update to 2.2.4

[l2dy (Zero King)]

Build failed on macOS 10.13.2 (only update version and checksums).

/usr/bin/clang -I/opt/local/include -I/opt/local/include -I/opt/local/include -I/opt/local/include  -Wall -Wno-pointer-sign -Wpointer-arith -pipe -Os -arch x86_64  -L/opt/local/lib -Wl,-headerpad_max_install_names -arch x86_64 -o gpg-agent gpg_agent-gpg-agent.o gpg_agent-command.o gpg_agent-command-ssh.o gpg_agent-call-pinentry.o gpg_agent-cache.o gpg_agent-trans.o gpg_agent-findkey.o gpg_agent-pksign.o gpg_agent-pkdecrypt.o gpg_agent-genkey.o gpg_agent-protect.o gpg_agent-trustlist.o gpg_agent-divert-scd.o gpg_agent-cvt-openpgp.o gpg_agent-call-scd.o gpg_agent-learncard.o ../common/libcommonpth.a -L/opt/local/lib -lgcrypt -lgpg-error -lassuan -L/opt/local/lib -lgpg-error -L/opt/local/lib -lnpth -L/opt/local/lib -lgpg-error -lintl -Wl,-framework -Wl,CoreFoundation  -liconv
Undefined symbols for architecture x86_64:
  "_assuan_sock_set_system_hooks", referenced from:
      _main in gpg_agent-gpg-agent.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [gpg-agent] Error 1
make[2]: *** Waiting for unfinished jobs....