win: fix memory leak inside uv__pipe_getname

PR-URL: https://github.com/libuv/libuv/pull/1265
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

src/win/pipe.c

@@ -2072,7 +2072,6 @@ static int uv__pipe_getname(const uv_pipe_t* handle, char* buffer, size_t* size)
   buffer[addrlen] = '\0';
 
   err = 0;
-  goto cleanup;
 
 error:
   uv__free(name_info);