Check existing units in ingredients for each ingredient, not for all. Otherwise we get the error when we shouldn't while trying to add a new unit to an ingredient.
Check existing units in ingredients for each ingredient, not for all. Otherwise we get the error when we shouldn't while trying to add a new unit to an ingredient.

svn path=/trunk/kdeextragear-3/krecipes/; revision=238079

eliovir/krecipes,eliovir/krecipes,eliovir/krecipes,eliovir/krecipes