Fix style issues in Mutant::Reporter*

lib/mutant/reporter/cli/printer/mutation.rb

@@ -54,12 +54,12 @@ module Mutant
           # Reporter for noop mutations
           class Noop < self
 
-            MESSAGE = [
-              'Parsed subject AST:',
-              '%s',
-              'Unparsed source:',
-              '%s',
-            ].join("\n")
+          MESSAGE = [
+            'Parsed subject AST:',
+            '%s',
+            'Unparsed source:',
+            '%s',
+          ].join("\n")
 
           private
 
@@ -70,7 +70,11 @@ module Mutant
             # @api private
             #
             def details
-              sprintf(MESSAGE, mutation.subject.node.inspect, mutation.original_source)
+              sprintf(
+                MESSAGE,
+                mutation.subject.node.inspect,
+                mutation.original_source
+              )
             end
 
           end # Noop

lib/mutant/reporter/cli/printer/subject.rb

@@ -59,6 +59,8 @@ module Mutant
               object.subject
             end
 
+            FORMAT = '(%02d/%02d) %3d%% - %0.02fs'.freeze
+
             # Print stats
             #
             # @return [undefned
@@ -66,7 +68,7 @@ module Mutant
             # @api private
             #
             def print_stats
-              status('(%02d/%02d) %3d%% - %0.02fs', amount_kills, amount_mutations, coverage, time)
+              status(FORMAT, amount_kills, amount_mutations, coverage, time)
             end
 
             # Print progress bar finish