marshal data too short error when reading cache file on Windows with 0.34.1

[cboos]

The fix for #2213 (7122c50) was not complete: the cache is now written as "binary" but is not read as "binary" which will be a problem on Windows.

After upgrading to 0.34.1:

...
Inheriting configuration from c:/Dev/ruby193/lib/ruby/gems/1.9.1/gems/rubocop-0.34.1/config/disabled.yml


0 files inspected, no offenses detected
marshal data too short
c:/Dev/ruby193/lib/ruby/gems/1.9.1/gems/rubocop-0.34.1/lib/rubocop/result_cache.rb:23:in `load'
...

The fix is simple enough I don't think it's worth creating a pull request:

--- result_cache.rb-0.34.1  Sat Sep 12 14:33:57 2015
+++ result_cache.rb Sat Sep 12 14:34:07 2015
@@ -20,7 +20,7 @@
     end

     def load
-      Marshal.load(IO.read(@path))
+      Marshal.load(IO.binread(@path))
     end

     def save(offenses, disabled_line_ranges, comments)

[jonas054]

Sorry about that. I'll create a pull request. It's worth it.