wifi_prov_mgr : Free memory allocated by cJSON_Print

components/wifi_provisioning/src/manager.c

@@ -284,7 +284,9 @@ static esp_err_t wifi_prov_mgr_start_service(const char *service_name, const cha
 
     /* Set version information / capabilities of provisioning service and application */
     cJSON *version_json = wifi_prov_get_info_json();
-    ret = protocomm_set_version(prov_ctx->pc, "proto-ver", cJSON_Print(version_json));
+    char *version_str = cJSON_Print(version_json);
+    ret = protocomm_set_version(prov_ctx->pc, "proto-ver", version_str);
+    free(version_str);
     cJSON_Delete(version_json);
     if (ret != ESP_OK) {
         ESP_LOGE(TAG, "Failed to set version endpoint");