hotplug: fix uninitialized variable

Commit e999ab7 (hotplug: Check chown return value) introduced a new variable
"ret" which is not explicitely initialized, leading to the following compile
error:

    hotplug.c:155:18: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]
        if (!g || ret < 0)
                      ^
    cc1: all warnings being treated as errors

Explicitely initialize it to zero to avoid that problem.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

diff --git a/plug/hotplug.c b/plug/hotplug.c
index 54a90cc..ae972f6 100644 (file)
--- a/plug/hotplug.c
+++ b/plug/hotplug.c
@@ -130,7 +130,7 @@ static void handle_makedev(struct blob_attr *msg, struct blob_attr *data)
        char *minor = hotplug_msg_find_var(msg, "MINOR");
        char *major = hotplug_msg_find_var(msg, "MAJOR");
        char *subsystem = hotplug_msg_find_var(msg, "SUBSYSTEM");
        char *minor = hotplug_msg_find_var(msg, "MINOR");
        char *major = hotplug_msg_find_var(msg, "MAJOR");
        char *subsystem = hotplug_msg_find_var(msg, "SUBSYSTEM");

-       int ret;
+       int ret = 0;

 
        blobmsg_parse_array(mkdev_policy, 3, tb, blobmsg_data(data), blobmsg_data_len(data));
        if (tb[0] && tb[1] && minor && major && subsystem) {
 
        blobmsg_parse_array(mkdev_policy, 3, tb, blobmsg_data(data), blobmsg_data_len(data));
        if (tb[0] && tb[1] && minor && major && subsystem) {