fix memory leak

Reviewed-by: NTim Hudson <tjh@openssl.org>

apps/s_client.c

@@ -2474,6 +2474,7 @@ int s_client_main(int argc, char **argv)
 #ifndef OPENSSL_NO_SRP
     OPENSSL_free(srp_arg.srppassin);
 #endif
+    OPENSSL_free(connectstr);
     OPENSSL_free(host);
     OPENSSL_free(port);
     X509_VERIFY_PARAM_free(vpm);