gc.c: add newline to report [ci skip]

* gc.c (gc_sweep_finish): gc_report format should end with a
  newline, as gc_report_body does not append it.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59120 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

gc.c

@@ -3594,7 +3594,7 @@ gc_sweep_start(rb_objspace_t *objspace)
 static void
 gc_sweep_finish(rb_objspace_t *objspace)
 {
-    gc_report(1, objspace, "gc_sweep_finish");
+    gc_report(1, objspace, "gc_sweep_finish\n");
 
     gc_prof_set_heap_info(objspace);
     heap_pages_free_unused_pages(objspace);