Fix compile time warning
Fix compile time warning

Signed-off-by: Antonio Borneo <671da3e274b6e69bd6120633f915f839d634d12f@gmail.com>

don-johnny/openconnect,brandt/openconnect,mveplus/openconnect-client,atyndall/openconnect,nmav/openconnect-mine,mtmiller/openconnect,liiir1985/openconnect,liiir1985/openconnect,matlockx/openconnect,lins05/openconnect,neshema/openconnect,pbrook/openconnect,chadcatlett/openconnect,sihde/openconnect,neshema/openconnect,liiir1985/openconnect,ldx/android_external_openconnect,matlockx/openconnect,cernekee/openconnect,sihde/openconnect,sihde/openconnect,mdutton3/OpenConnect,lins05/openconnect,nmav/openconnect-mine,chadcatlett/openconnect,ldx/android_external_openconnect,brandt/openconnect,mtmiller/openconnect,mtmiller/openconnect,mveplus/openconnect-client,brandt/openconnect,lins05/openconnect,matlockx/openconnect,cernekee/openconnect,brandt/openconnect,don-johnny/openconnect,certik/openconnect,atyndall/openconnect,atyndall/openconnect,mveplus/openconnect-client,matlockx/openconnect,nmav/openconnect-mine,mdutton3/OpenConnect,don-johnny/openconnect,pbrook/openconnect,chadcatlett/openconnect,chadcatlett/openconnect,certik/openconnect,neshema/openconnect,atyndall/openconnect,neshema/openconnect,mdutton3/OpenConnect,lins05/openconnect,cernekee/openconnect,mveplus/openconnect-client,mtmiller/openconnect,certik/openconnect,cernekee/openconnect,nmav/openconnect-mine,liiir1985/openconnect,don-johnny/openconnect