* prelude.rb (Mutex::synchronize): capture exception from unlock.

[ruby-dev:32935]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14977 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Thu Jan 10 18:00:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* prelude.rb (Mutex::synchronize): capture exception from unlock.
+	  [ruby-dev:32935]
+
 Thu Jan 10 10:15:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* io.c (io_encoding_set): IO.pipe("euc-jp", nil) should work as

prelude.rb

@@ -7,7 +7,7 @@ class Mutex
     begin
       yield
     ensure
-      self.unlock
+      self.unlock rescue nil
     end
   end
 end