test handshake_server failure

[ygo...@gmail.com]

Hi:

I'm testing the grpc with version 1.12.0 and c language, I found the test case handshake_server stopped
on the line
thd.Start();

in function server_ssl_test() of file test/core/handshake/server_ssl_common.cc, but it ran successfully after I put these two lines
SSL_load_error_strings();
OpenSSL_add_ssl_algorithms();
before the line
thd.Start();

I guess this is a bug caused by using openssl under multiple threading environment.
My operating system is "SUSE Linux Enterprise Server 12 (x86_64)" and gcc version is 6.1.0.
I also wrote an issue about this at: "https://github.com/grpc/grpc/issues/18758".

Thanks.