Include ws2tcpip.h in order to get in6_addr
Include ws2tcpip.h in order to get in6_addr

It's currently required in src/openssl_stream.c only.

jflesch/libgit2-mariadb,jflesch/libgit2-mariadb,jflesch/libgit2-mariadb,jflesch/libgit2-mariadb,jflesch/libgit2-mariadb,jflesch/libgit2-mariadb