Fixed previous style "improvement"

lib/api/v3/work_packages/work_packages_api.rb

@@ -59,16 +59,12 @@ module API
               def write_request_valid?
                 contract = WorkPackageContract.new(@representer.represented, current_user)
 
-                contract_valid = contract.validate
-                represented_valid = @representer.represented.valid?
+                return true if contract.validate && @representer.represented.valid?
 
-                if contract_valid && represented_valid
-                  true
-                else
                 # We need to merge the contract errors with the model errors in
                 # order to have them available at one place.
-                  contract.errors.each do |key, messages|
-                    messages.each do |message|
+                contract.errors.keys.each do |key|
+                  contract.errors[key].each do |message|
                     @representer.represented.errors.add(key, message)
                   end
                 end
@@ -76,7 +72,6 @@ module API
                 false
               end
             end
-            end
 
             before do
               @work_package = WorkPackage.find(params[:id])