Use correct variable to check if field-label is set.
Use correct variable to check if field-label is set.

Used $this instead of $f, this resulted in error

Sogl/koala-framework,Ben-Ho/koala-framework,kaufmo/koala-framework,koala-framework/koala-framework,koala-framework/koala-framework,fraxachun/koala-framework,nsams/koala-framework,nsams/koala-framework,Sogl/koala-framework,yacon/koala-framework,darimpulso/koala-framework,kaufmo/koala-framework,kaufmo/koala-framework,Ben-Ho/koala-framework,nsams/koala-framework,fraxachun/koala-framework,yacon/koala-framework,yacon/koala-framework,darimpulso/koala-framework