block/ssh: fix possible segmentation fault when .desc is not null-terminated
This patch prevents a possible segmentation fault when .desc members are checked against NULL. The ssh_runtime_opts was added by commit 8a6a8089 ("block/ssh: Use QemuOpts for runtime options"). This fix was inspired by http://lists.nongnu.org/archive/html/qemu-devel/2018-01/msg00883.html. Fixes: 8a6a8089 ("block/ssh: Use QemuOpts for runtime options") Cc: Max Reitz <mreitz@redhat.com> Cc: Eric Blake <eblake@redhat.com> Signed-off-by: NMurilo Opsfelder Araujo <muriloo@linux.vnet.ibm.com> Reviewed-by: NEric Blake <eblake@redhat.com> Reviewed-by: NJeff Cody <jcody@redhat.com> Signed-off-by: NJeff Cody <jcody@redhat.com> (cherry picked from commit fbd5c4c0) Signed-off-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
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