WMS legend broken for percent-encoded LegendURL's

[qgib]

Author Name: Richard Duivenvoorde (@rduivenvoorde)
Original Redmine Issue: 17562
Affected QGIS version: master
Redmine category:web_services_clients/wms

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Some WMS services, eg:

http://gisservices.noord-holland.nl/ags/services/pnh_dataservice_alg/MapServer/WMSServer?request=GetCapabilities&service=WMS

have their (valid) LegendURL's percentage-encoded in the capabilities, eg:

http://gisservices.noord-holland.nl/ags/services/pnh_dataservice_alg/MapServer/WmsServer?request=GetLegendGraphic%26version=1.3.0%26format=image/png%26layer=Bouwen op slappe grond - Damwand complexiteit

While this was working in 2.18/qt4, this returns a 'flawed image' in 2.99 because QGIS adds a second &FORMAT=image/png to the url, while the server can apparently only handle one.

I'll add a Pull Request to fix this.

[qgib]

Author Name: Richard Duivenvoorde (@rduivenvoorde)

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This is apparently an ArcGis server: http://gisservices.noord-holland.nl/ags/services/pnh_dataservice_alg/MapServer/

[qgib]

Author Name: Richard Duivenvoorde (@rduivenvoorde)

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see #5739

[qgib]

Author Name: Richard Duivenvoorde (@rduivenvoorde)

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Applied in changeset f6ffb00.

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• done_ratio was changed from 0 to 100
• status_id was changed from Open to Closed

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• resolution was changed from to fixed/implemented