[Qemu-devel] [PATCH v23 10/32] check NULL input for qemu_opts_del

[Chunyan Liu]

To simplify later using of qemu_opts_del, accept NULL input.

Signed-off-by: Chunyan Liu <address@hidden>
---
 util/qemu-option.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/util/qemu-option.c b/util/qemu-option.c
index 6c304b2..e9802f3 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -990,6 +990,10 @@ void qemu_opts_del(QemuOpts *opts)
 {
     QemuOpt *opt;
 
+    if (opts == NULL) {
+        return;
+    }
+
     for (;;) {
         opt = QTAILQ_FIRST(&opts->head);
         if (opt == NULL)
-- 
1.7.12.4