merges r23361 from trunk into ruby_1_9_1.

--
* array.c (rb_ary_flatten_bang): returns nil if nothing changed.
  a patch from Marc-Andre Lafortune in [ruby-core:23382].

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@23513 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/version.h b/version.h
index ae7c2f009..435c7a974 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "1.9.1"
 #define RUBY_RELEASE_DATE "2009-05-12"
-#define RUBY_PATCHLEVEL 130
+#define RUBY_PATCHLEVEL 131
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 9
 #define RUBY_VERSION_TEENY 1