Use d->hasDisplayPrompt

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5373 43c1dc8c-776e-4df2-8ef1-6e829299be21
Just to make sure d->hasDisplayPrompt has been set correctly

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5374 43c1dc8c-776e-4df2-8ef1-6e829299be21
Remove unneccessary pointer checks (addButton and buidlLine)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5375 43c1dc8c-776e-4df2-8ef1-6e829299be21
Added channel->line != NULL assertion in sccp_channel_openReceiveChannel, because of a backtrace\/report, this should not happen / be possible, therefor assertion is used

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5376 43c1dc8c-776e-4df2-8ef1-6e829299be21