merge revision(s) 7ff1bf317887c0d7b21e91ad548d07b9f05c540c,e89d80702bd98a8276243a7fcaa2a158b3bfb659: [Backport #18516]

	An alias can suppress method redefinition warning

	---
	 test/ruby/test_alias.rb | 11 +++++++++++
	 1 file changed, 11 insertions(+)

	Fix memory leak at the same named alias [Bug #18516]

	When aliasing a method to the same name method, set a separate bit
	flag on that method definition, instead of the reference count
	increment.  Although this kind of alias has no actual effect at
	runtime, is used as the hack to suppress the method re-definition
	warning.
	---
	 method.h                |  1 +
	 test/ruby/test_alias.rb | 18 ++++++++++++++++++
	 vm_method.c             |  9 ++++++++-
	 3 files changed, 27 insertions(+), 1 deletion(-)

1 files changed, 1 insertions, 1 deletions

diff --git a/version.h b/version.h
index fda7b06b3d..74506d4b45 100644
--- a/version.h
+++ b/version.h
@@ -11,7 +11,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 12
+#define RUBY_PATCHLEVEL 13
 
 #define RUBY_RELEASE_YEAR 2022
 #define RUBY_RELEASE_MONTH 2