In httpd_register_uri_handler api, for the strdup function failure case was not
checked and not returned any error by freeing previously allocated memory, if the memory
allocation for strdup function did not gets successful.
Closes https://github.com/espressif/esp-idf/issues/15878
nvs_tool.py did not provide the minimal output support which outputs
the only necessary data.
nvs_tool.py minimal text ouptut, the deliminators were not handled
in the output
Closes https://github.com/espressif/esp-idf/issues/15274
1. In async handler example, on hitting /long URI and closing the
connection forcefully from client (example ctrl + c) cause more stack
size (almost 200 bytes) than successfull request.
2. The connection should be closed from the server as soon as the client
closes the connect (i.e. handler should return ESP_FAIL to close the
connection)