Do not cancel a thread which got never started
Do not cancel a thread which got never started

When using our gzip version with tar we got the folloing message:

tar: Child died with signal 11
tar: Error is not recoverable: exiting now

This was casued by a segfault in the destructor located in ddcb_capi.c.
Since we used a GenWQE card and not a CAPI card, we obviously tried to
stop something which was not allocated before.

Reported-by: Qing Wang <8a1d94d85a68593baac149956da946340f142386@cn.ibm.com>

ibm-genwqe/genwqe-user,ibm-genwqe/genwqe-user,tblume/genwqe-user,ferseiti/genwqe-user,ibm-genwqe/genwqe-user,tblume/genwqe-user,ferseiti/genwqe-user