Completion.pm: eliminate tab completion warning
Completion.pm: eliminate tab completion warning

Under certain circumstances, a warning "Use of uninitialized value in
regexp compilation" was displayed when the user hit TAB.

Signed-off-by: Nathan Cutler <f9d8c66a4e898e67db786769b5b347b640e1a9a6@suse.com>

smithfarm/dochazka-cli