glib-aux: fix thread-safe initialization in _nm_g_source_sentinel_get_init()

Fixes: ce7c28c514c8 ('glib-aux: add nm_g_source_sentinel_get() util')
(cherry picked from commit 2140bbf7f52429a34993ed98098b2afb5443c676)

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libnm-glib-aux/nm-shared-utils.c b/src/libnm-glib-aux/nm-shared-utils.c
index fac4319692..81852aea36 100644
--- a/src/libnm-glib-aux/nm-shared-utils.c
+++ b/src/libnm-glib-aux/nm-shared-utils.c
@@ -4935,14 +4935,14 @@ _nm_g_source_sentinel_get_init(GSource **p_source)
     };
     GSource *source;
 
-again:
     source = g_source_new((GSourceFuncs *) &source_funcs, sizeof(GSource));
     g_source_set_priority(source, G_PRIORITY_DEFAULT_IDLE);
     g_source_set_name(source, "nm_g_source_sentinel");
 
     if (!g_atomic_pointer_compare_and_exchange(p_source, NULL, source)) {
         g_source_unref(source);
-        goto again;
+        source = g_atomic_pointer_get(p_source);
+        nm_assert(source);
     }
 
     return source;