Fix the retrieval of DNS servers for iOS and WP
Fix the retrieval of DNS servers for iOS and WP

inet_ntoa was sometimes failing (probably due to a concurrent usage)
It has been replaced by inet_ntop with error checking

PatrickJBaird/sdk,Acidburn0zzz/sdk,PatrickJBaird/sdk,Sisky/sdk,sergiohs84/sdk,BiuroCo/mega,sergiohs84/sdk,Novo1987/sdk,BiuroCo/mega,BiuroCo/mega,Novo1987/sdk,Alexx99/sdk,SuperStarPL/sdk,meganz/sdk,sergiohs84/sdk,sergiohs84/sdk,Alexx99/sdk,meganz/sdk,SuperStarPL/sdk,meganz/sdk,Sisky/sdk,Acidburn0zzz/sdk,Novo1987/sdk,SuperStarPL/sdk,Alexx99/sdk,BlackFired/sdk,BiuroCo/mega,Novo1987/sdk,BiuroCo/mega,Acidburn0zzz/sdk,BiuroCo/mega,BlackFired/sdk,Acidburn0zzz/sdk,meganz/sdk,Novo1987/sdk,PatrickJBaird/sdk,meganz/sdk,Sisky/sdk,Novo1987/sdk,BlackFired/sdk,meganz/sdk,sergiohs84/sdk,meganz/sdk,Sisky/sdk,Acidburn0zzz/sdk,Acidburn0zzz/sdk,Alexx99/sdk,sergiohs84/sdk,Alexx99/sdk,PatrickJBaird/sdk,BlackFired/sdk,Acidburn0zzz/sdk,BlackFired/sdk,Alexx99/sdk,Acidburn0zzz/sdk,sergiohs84/sdk,BlackFired/sdk,SuperStarPL/sdk,Novo1987/sdk,PatrickJBaird/sdk,SuperStarPL/sdk,SuperStarPL/sdk,PatrickJBaird/sdk,sergiohs84/sdk,Sisky/sdk,Sisky/sdk,Novo1987/sdk