vlib: introduce vlib_get_elog_main()

Type: improvement
Change-Id: I73383eb15186021cd6527d112da8443a0082f129
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vlib/node.c b/src/vlib/node.c
index 3c96d9d..9de4c69 100644
--- a/src/vlib/node.c
+++ b/src/vlib/node.c
@@ -68,7 +68,8 @@
   vec_free (t->format);
   t->format = (char *) format (0, "%v-return: %%d%c", n->name, 0);
 
-  n->name_elog_string = elog_string (&vm->elog_main, "%v%c", n->name, 0);
+  n->name_elog_string =
+    elog_string (&vlib_global_main.elog_main, "%v%c", n->name, 0);
 }
 
 void