[FIX] Actually apply serverName

As it turns out, it *was* odd. Not doing that will cause *someone* to
spend several hours fixing a SSL problem around a bridge they're making,
which needs to download media from a server and can't from *some* for an
undiscernable reason, causing said person to start going insane before
realising that Cytoplasm didn't set the server name properly.

src/Tls/TlsOpenSSL.c

@@ -71,14 +71,6 @@ TlsInitClient(int fd, const char *serverName)
     OpenSSLCookie *cookie;
     char errorStr[256];
 
-    /*
-     * TODO: Seems odd that this isn't needed to make the
-     * connection... we should figure out how to verify the
-     * certificate matches the server we think we're
-     * connecting to.
-     */
-    (void) serverName;
-
     cookie = Malloc(sizeof(OpenSSLCookie));
     if (!cookie)
     {
@@ -96,6 +88,7 @@ TlsInitClient(int fd, const char *serverName)
     }
 
     cookie->ssl = SSL_new(cookie->ctx);
+    SSL_set_tlsext_host_name(cookie->ssl, serverName);
     if (!cookie->ssl)
     {
         goto error;