[contents] Better error reporting for cUrl errors (#958)
[contents] Better error reporting for cUrl errors (#958)

References #954
ORelio/rss-bridge,kranack/rss-bridge,RSS-Bridge/rss-bridge,ORelio/rss-bridge,RSS-Bridge/rss-bridge,RSS-Bridge/rss-bridge,kranack/rss-bridge,Frenzie/rss-bridge,simonbru/rss-bridge,sebsauvage/rss-bridge,Riduidel/rss-bridge,kranack/rss-bridge,Riduidel/rss-bridge,ORelio/rss-bridge,kranack/rss-bridge,Riduidel/rss-bridge,Frenzie/rss-bridge,simonbru/rss-bridge