make local symbols static

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52964 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/error.c b/error.c
index 5606612bb5..fb1de8a06e 100644
--- a/error.c
+++ b/error.c
@@ -917,7 +917,7 @@ rb_exc_set_backtrace(VALUE exc, VALUE bt)
  * information.
  */
 
-VALUE
+static VALUE
 exc_cause(VALUE exc)
 {
     return rb_attr_get(exc, id_cause);