Fix order-of-arguments problem that could cause crash -- need to test 'form' before accessing form->blah.
Fix order-of-arguments problem that could cause crash -- need to test 'form'
before accessing form->blah.

h3rb/openshadinglanguage,h3rb/openshadinglanguage,qdtk/openshadinglanguage,qdtk/openshadinglanguage,tectronics/openshadinglanguage,h3rb/openshadinglanguage,tectronics/openshadinglanguage,tectronics/openshadinglanguage,h3rb/openshadinglanguage,qdtk/openshadinglanguage,qdtk/openshadinglanguage,tectronics/openshadinglanguage