[DEBUG](ARDiscovery) (Android) Fix crash when trying to get an IP on a destroyed jmdns context.
[DEBUG](ARDiscovery) (Android) Fix crash when trying to get an IP on a destroyed jmdns context.

pwkalana9/ARSDKBuildUtils,aoi/ARSDKBuildUtils,aoi/ARSDKBuildUtils,Parrot-Developers/ARSDKBuildUtils,niavok/ARSDKBuildUtils,pwkalana9/ARSDKBuildUtils,cvramire/ARSDKBuildUtils,cvramire/ARSDKBuildUtils,Parrot-Developers/ARSDKBuildUtils,niavok/ARSDKBuildUtils