Fix signed in employee adding supplier functionality

app/services/new_supplier.rb

@@ -28,6 +28,7 @@ class NewSupplier
   private
 
   def persist!
+    @employee ||= current_employee
     @employee ||= Employee.new email: email, password: password, password_confirmation: password_confirmation
     raise "Cannot create employee with #{attributes.inspect}" unless employee.save
     @supplier = Supplier.create name: supplier_name
@@ -36,6 +37,7 @@ class NewSupplier
 
   def employee_uniqueness_or_existence
     return if current_employee.present?
+    return if @employee = current_employee
     if Employee.count_by_email(email) > 0
       employee = Employee.find_by_email(email)
       if employee.valid_password? password