Registry: Do not crash on widgets with empty docstrings
Registry: Do not crash on widgets with empty docstrings

qPCR4vir/orange3,cheral/orange3,qPCR4vir/orange3,cheral/orange3,qPCR4vir/orange3,cheral/orange3,qPCR4vir/orange3,cheral/orange3,qPCR4vir/orange3,cheral/orange3,qPCR4vir/orange3,cheral/orange3