Fix intermittent spec failure.

fhwang · fhwang · commit 50f39e1d7ea4 · 2015-10-01T11:06:13.000-04:00
diff --git a/spec/cc/analyzer/engines_runner_spec.rb b/spec/cc/analyzer/engines_runner_spec.rb
@@ -1,4 +1,5 @@
 require "spec_helper"
+require "file_utils_ext"
 
 module CC::Analyzer
   describe EnginesRunner do
