dwarves: Don't use conf if its NULL in cus__load_running_kernel()

Don't use it if NULL, fixing a segfault with dtagnames as reported in:

https://bugzilla.redhat.com/show_bug.cgi?id=1795379

Reported-by: Jan Pokorný <jpokorny@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1 file changed