Fix regexp in tool/parse_mri_errors.rb

* The test description might contain spaces.

Author: eregon

tool/parse_mri_errors.rb

@@ -48,7 +48,7 @@
 repo_root = File.expand_path("../..", __FILE__)
 excludes = "#{repo_root}/test/mri/excludes"
 
-t = /((?:\w+::)?\w+)#(\S+)(?:\s*\[.+\])?:$/
+t = /((?:\w+::)?\w+)#(.+?)(?:\s*\[(?:[^\]])+\])?:$/
 contents.scan(t) do |class_name, test_method, result|
   file = excludes + "/" + class_name.split("::").join('/') + ".rb"
   unless result == "."