Update lib/omniauth/identity/models/rom.rb

Co-authored-by: Copilot <[email protected]>

Author: pboling

lib/omniauth/identity/models/rom.rb

@@ -31,7 +31,7 @@ def self.included(base)
             # @param password [String] The password to check
             # @return [self, false] Self if authenticated, false if not
             def authenticate(password)
-              password_digest = @identity_data[@password_field || :password_digest]
+              password_digest = @identity_data[self.class.password_field || :password_digest]
               return false unless password_digest
 
               begin