[sysprof] libsysprof: handle NULL governor case gracefully

[Christian Hergert <chergert src gnome org>]

commit 5a88d5a0a14b68ddc898990947d89df26ac7895c
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jul 20 16:24:52 2022 -0700

    libsysprof: handle NULL governor case gracefully

 src/libsysprof/sysprof-governor-source.c | 19 ++++++-------------
 1 file changed, 6 insertions(+), 13 deletions(-)
---
diff --git a/src/libsysprof/sysprof-governor-source.c b/src/libsysprof/sysprof-governor-source.c
index 5277e01d..a24aaa81 100644
--- a/src/libsysprof/sysprof-governor-source.c
+++ b/src/libsysprof/sysprof-governor-source.c
@@ -285,19 +285,12 @@ enable_paranoid_cb (GObject      *object,
 
   if (!self->disable_governor)
     sysprof_source_emit_finished (SYSPROF_SOURCE (self));
-  else
-    {
-      sysprof_helpers_set_governor_async (helpers,
-                                         self->old_governor,
-                                         NULL,
-                                         enable_governor_cb,
-                                         self);
-
-      /* Can't use g_steal_pointer above, as that might set self = NULL before
-       * self->old_governor is evaluated → crash
-       */
-      self = NULL;
-    }
+  else if (self->old_governor != NULL)
+    sysprof_helpers_set_governor_async (helpers,
+                                        self->old_governor,
+                                        NULL,
+                                        enable_governor_cb,
+                                        g_object_ref (self));
 }
 
 static void