fixed guard clause violation

Author: ochagata

.rubocop_todo.yml

@@ -74,12 +74,6 @@ Style/DoubleNegation:
     - 'lib/grape/middleware/versioner/header.rb'
     - 'lib/grape/path.rb'
 
-# Offense count: 1
-# Configuration parameters: MinBodyLength.
-Style/GuardClause:
-  Exclude:
-    - 'lib/grape/endpoint.rb'
-
 # Offense count: 14
 # Configuration parameters: EnforcedStyle, SupportedStyles.
 # SupportedStyles: compact, exploded

lib/grape/endpoint.rb

@@ -22,11 +22,8 @@ def new(*args, &block)
       def before_each(new_setup = false, &block)
         @before_each ||= []
         if new_setup == false
-          if block_given?
-            @before_each << block
-          else
-            return @before_each
-          end
+          return @before_each unless block_given?
+          @before_each << block
         else
           @before_each = [new_setup]
         end