merge revision(s) 5d815542815fe8b939239750bba7f8f0b79c97d6: [Backport #18154]

	[Bug #18154] Fix memory leak in String#initialize

	String#initialize can leak memory when called on a string that is marked
	with STR_NOFREE because it does not unset the STR_NOFREE flag.
	---
	 string.c                 |  2 +-
	 test/ruby/test_string.rb | 10 ++++++++++
	 2 files changed, 11 insertions(+), 1 deletion(-)

1 files changed, 1 insertions, 1 deletions

diff --git a/version.h b/version.h
index 242f985511..81ae97bb31 100644
--- a/version.h
+++ b/version.h
@@ -2,7 +2,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 5
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 196
+#define RUBY_PATCHLEVEL 197
 
 #define RUBY_RELEASE_YEAR 2021
 #define RUBY_RELEASE_MONTH 11