plugin.c: Added a comment that explains why the order of the linked list and callback...

diff --git a/src/plugin.c b/src/plugin.c
index 8087950ea85987a76b1f750c2a449e2fa5b27899..da662040cecedc916b5709fefdeae6b8ae6a5b49 100644 (file)
--- a/src/plugin.c
+++ b/src/plugin.c
@@ -607,6 +607,11 @@ void plugin_shutdown_all (void)
        while (le != NULL)
        {
                callback = (int (*) (void)) le->value;
+
+               /* Advance the pointer before calling the callback allows
+                * shutdown functions to unregister themselves. If done the
+                * other way around the memory `le' points to will be freed
+                * after callback returns. */
                le = le->next;
 
                (*callback) ();