Merge branch 'bugfix/malloc_warnings_transport' into 'master'

tcp_transport: fix minor memory leak found by static analyzer

Closes IDF-681

See merge request idf/esp-idf!5141

components/tcp_transport/transport_ws.c

@@ -296,7 +296,10 @@ esp_transport_handle_t esp_transport_ws_init(esp_transport_handle_t parent_handl
     ws->parent = parent_handle;
 
     ws->path = strdup("/");
-    ESP_TRANSPORT_MEM_CHECK(TAG, ws->path, return NULL);
+    ESP_TRANSPORT_MEM_CHECK(TAG, ws->path, {
+        free(ws);
+        return NULL;
+    });
     ws->buffer = malloc(DEFAULT_WS_BUFFER);
     ESP_TRANSPORT_MEM_CHECK(TAG, ws->buffer, {
         free(ws->path);