Про утечки памяти

for(ProjectsInfo pi : vector) { /* Здесь код */ }

for(ProjectsInfo& pi : vector) { /* Здесь код */ }

void CurlHandler::getPage(string url, string &buffer, int with_timeout)
{
    buffer = "";
 
    if (curl)
    {
        curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, with_timeout);
        curl_easy_setopt(curl, CURLOPT_TIMEOUT, with_timeout);
 
        curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writer);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
 
        curl_easy_perform(curl);
    }
 
}

void CurlHandler::init() {
 
    string user_agent = "Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)";
 
    curl = curl_easy_init();
 
    curl_easy_setopt(curl, CURLOPT_HEADER, 0);
 
    curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 5);
    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, false);
    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 1);
    curl_easy_setopt(curl, CURLOPT_VERBOSE, 0);
    curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, true);
    curl_easy_setopt(curl, CURLOPT_USERAGENT, user_agent.c_str());
    curl_easy_setopt(curl, CURLOPT_ENCODING, "");
 
    //curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "test.txt");
    //curl_easy_setopt(curl, CURLOPT_COOKIEJAR, "test.txt");
 
    curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, 1);
    curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, 360);
    curl_easy_setopt(curl, CURLOPT_IGNORE_CONTENT_LENGTH, 1);
    curl_easy_setopt(curl, CURLOPT_TCP_NODELAY, 1);
}

static int writer(char *data, size_t size, size_t nmemb, string *writerData)
{
    if (writerData == NULL) return 0;
    writerData->append(data, size*nmemb);
 
    return size * nmemb;
}

for(ProjectsInfo pi : vector) { /* Здесь код */ }

curl_easy_cleanup(curl);