[pypy-commit] stmgc default: improve comment

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: 
Changeset: r1642:5e496c71f2ed
Date: 2015-02-22 18:53 +0100
http://bitbucket.org/pypy/stmgc/changeset/5e496c71f2ed/

Log:	improve comment

diff --git a/c7/stm/extra.c b/c7/stm/extra.c
--- a/c7/stm/extra.c
+++ b/c7/stm/extra.c
@@ -72,8 +72,9 @@
         assert(key != NULL);
         assert(callback != NULL);
 
-        /* The callback may call stm_call_on_abort(key, NULL).  It is ignored,
-           because 'callbacks_on_commit_and_abort' was cleared already. */
+        /* The callback may call stm_call_on_abort(key, NULL)
+           (so with callback==NULL).  It is ignored, because
+           'callbacks_on_commit_and_abort' was cleared already. */
         callback(key);
 
     } TREE_LOOP_END;