Initialize OpenSSL early before creating TCPSocket

OpenSSL make take some time to initialize, and it would be best
to take that time before connecting instead of after.

From joshc on Redmine.

Fixes Ruby Bug #9459

Author: jeremyevans

Diff for: lib/net/http.rb

@@ -973,6 +973,12 @@ def do_start
     private :do_start
 
     def connect
+      if use_ssl?
+        # reference early to load OpenSSL before connecting,
+        # as OpenSSL may take time to load.
+        @ssl_context = OpenSSL::SSL::SSLContext.new
+      end
+
       if proxy? then
         conn_addr = proxy_address
         conn_port = proxy_port
@@ -1020,7 +1026,6 @@ def connect
             end
           end
         end
-        @ssl_context = OpenSSL::SSL::SSLContext.new
         @ssl_context.set_params(ssl_parameters)
         @ssl_context.session_cache_mode =
           OpenSSL::SSL::SSLContext::SESSION_CACHE_CLIENT |