qemu-option: New qemu_opts_reset()

Signed-off-by: Markus Armbruster <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>
diff --git a/qemu-option.c b/qemu-option.c
index 7f70d0f..30327d4 100644
--- a/qemu-option.c
+++ b/qemu-option.c
@@ -719,6 +719,15 @@
     return opts;
 }
 
+void qemu_opts_reset(QemuOptsList *list)
+{
+    QemuOpts *opts, *next_opts;
+
+    QTAILQ_FOREACH_SAFE(opts, &list->head, next, next_opts) {
+        qemu_opts_del(opts);
+    }
+}
+
 int qemu_opts_set(QemuOptsList *list, const char *id,
                   const char *name, const char *value)
 {