Fix setting of ssl_strings_inited.

Thanks to GitHub user zsergey105 for reporting this.
Reviewed-by: NMatthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/6875)

ssl/ssl_init.c

@@ -129,8 +129,8 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_load_ssl_strings)
             "ERR_load_SSL_strings()\n");
 # endif
     ERR_load_SSL_strings();
-#endif
     ssl_strings_inited = 1;
+#endif
     return 1;
 }