Workaround for unknown bug in libcurl and/or ssl

src/zarr.cpp

@@ -170,11 +170,13 @@ Error ZarrFunctions::GetChunk(const MString& var, const std::vector<size_t>& chu
  if(!suc)
  {
   michlib::message(str + " not found in cache, downloading");
-  auto [out, res] = GetUrl(chandle, str);
+  CURLRAII myhandle; // TODO: remove this workaround of unknown bug
+  //auto [out, res] = GetUrl(chandle, str);
+  auto [out, res] = GetUrl(myhandle, str);
   if(res != CURLE_OK) return Error(pref, MString("can't download chunk: ") + chandle.Err());
   long respcode;
-  curl_easy_getinfo(chandle, CURLINFO_RESPONSE_CODE, &respcode);
-  michlib::message("Response: ", respcode);
+  //curl_easy_getinfo(chandle, CURLINFO_RESPONSE_CODE, &respcode);
+  curl_easy_getinfo(myhandle, CURLINFO_RESPONSE_CODE, &respcode);
   if(respcode == 403) out = ""; // Failed chunk download mean that this chunk contains only fill
   cache->Put(str, out, 3600);
   content = std::move(out);