Fix Bug 310318 Wrong transport mode picked when reply to an invitation

and Bud 302344 kmail sends invitation confirmation using wrong smtp
transport

FIXED-IN: 4.9.4
BUG: 310318
BUG: 302344

Thanks 	Julian Golderer and "Dr. Axel Braun" to help me to debug it.

(was a error between transport name and transport id)