fix validation inconsistency

Author: dgasper

lib/grape/validations/validators/base.rb

@@ -39,13 +39,12 @@ def validate(request)
       def validate!(params)
         attributes = AttributesIterator.new(self, @scope, params)
         array_errors = []
-        attributes.each do |resource_params, attr_name, inside_array|
+        attributes.each do |resource_params, attr_name|
           next unless @required || (resource_params.respond_to?(:key?) && resource_params.key?(attr_name))
 
           begin
             validate_param!(attr_name, resource_params)
           rescue Grape::Exceptions::Validation => e
-            raise e unless inside_array
             # we collect errors inside array because
             # there may be more than one error per field
             array_errors << e

spec/grape/validations/validators/presence_spec.rb

@@ -145,7 +145,7 @@ def app
     it 'validates name, company' do
       get '/'
       expect(last_response.status).to eq(400)
-      expect(last_response.body).to eq('{"error":"name is missing"}')
+      expect(last_response.body).to eq('{"error":"name is missing, company is missing"}')
 
       get '/', name: 'Bob'
       expect(last_response.status).to eq(400)