CPLHTTPFetch(): ignore SSL/TLS errors about non-properly terminated connections

[rouault]

Fixes https://lists.osgeo.org/pipermail/gdal-dev/2022-October/056330.html

Cf curl/curl#3148 and curl/curl#9024

[jgrocha]

When the error is different then those related to SSL, the message might not be very helpful ("You may set the CPL_CURL_IGNORE_ERROR..." )

Example (using a server listed on our tests):

ogrinfo 'WFS:https://sampleserver6.arcgisonline.com/arcgis/services/SampleWorldCities/MapServer/WFSServer?service=WFS&version=2.0.0&request=GetFeature&typename=esri:World&count=1'
INFO: Open of `WFS:https://sampleserver6.arcgisonline.com/arcgis/services/SampleWorldCities/MapServer/WFSServer?service=WFS&version=2.0.0&request=GetFeature&typename=esri:World&count=1'
      using driver `WFS' successful.
Metadata:
  TITLE=WFS
ERROR 1: Empty content returned by server
ERROR 1: HTTP/2 stream 0 was not closed cleanly: INTERNAL_ERROR (err 2). You may set the CPL_CURL_IGNORE_ERROR configuration option to YES to try to ignore it.
ERROR 1: Error returned by server : HTTP/2 stream 0 was not closed cleanly: INTERNAL_ERROR (err 2) (92)
ERROR 1: Empty content returned by server
1: esri:World (title: World)

It is just a comment. There is no problem is showing the message, even if it does not apply.

[jgrocha]

I've checkout out this PR and it runs fine on my side.