tool/vcs.rb: fix Ruby 1.8 compatibility

Symbol#to_proc is not standard in Ruby 1.8

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48853 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Tue Dec 16 05:41:46 2014  Eric Wong  <e@80x24.org>
+
+	* tool/vcs.rb: fix Ruby 1.8 compatibility
+
 Mon Dec 15 17:51:28 2014  Koichi Sasada  <ko1@atdot.net>
 
 	* ext/objspace/objspace.c: ObjectSpace.memsize_of(obj) returns

tool/vcs.rb

@@ -93,8 +93,9 @@ class VCS
     if modified
       /\A(\d+)-(\d+)-(\d+)\D(\d+):(\d+):(\d+(?:\.\d+)?)\s*(?:Z|([-+]\d\d)(\d\d))\z/ =~ modified or
         raise "unknown time format - #{modified}"
+      match = $~[1..6].map { |x| x.to_i }
       begin
-        modified = Time.new(*$~[1..6].map(&:to_i), ($7 ? "#{$7}:#{$8}" : "+00:00"))
+        modified = Time.new(*match, ($7 ? "#{$7}:#{$8}" : "+00:00"))
       rescue ArgumentError
         modified = Time.utc(*$~[1..6]) + $7.to_i * 3600 + $8.to_i * 60
       end