Correct input to field, after incorrect input, never adjusts help block text

[TheMarksman]

From my understanding, this line: https://github.com/Textalk/angular-schema-form/blob/development/src/directives/message.js#L20

should be if (valid && !scope.hasError()) {.

As it stands, correct input never changes the help-block text back to the set description or the empty string.

[davidlgj]

Yep, that's correct. thx.