Fix MissingFormula namespacing.

Library/Homebrew/dev-cmd/audit.rb

@@ -139,7 +139,6 @@ module Homebrew
 
     ofail "#{Formatter.pluralize(problem_count, "problem")} in #{Formatter.pluralize(formula_count, "formula")}"
   end
-end
 
   class FormulaText
     def initialize(path)
@@ -970,3 +969,4 @@ class ResourceAuditor
       @problems << text
     end
   end
+end

Library/Homebrew/test/dev-cmd/audit_spec.rb

@@ -8,6 +8,7 @@ module Count
   end
 end
 
+module Homebrew
   describe FormulaText do
     alias_matcher :have_data, :be_data
     alias_matcher :have_end, :be_end
@@ -601,3 +602,4 @@ describe FormulaAuditor do
       end
     end
   end
+end