Check if property and storage are objects before decreasing reference count.
Check if property and storage are objects before decreasing reference
count.

piotras/midgard-core,piotras/midgard-core,midgardproject/midgard-core,piotras/midgard-core,midgardproject/midgard-core,midgardproject/midgard-core,midgardproject/midgard-core,piotras/midgard-core