Better handling for malformed entity data in spanwers preview.
Better handling for malformed entity data in spanwers preview.

For some reason, the 'id' tag is not always present in the spawned entity NBT data.
This made MCEdit crash when hovering spawners containing such data.

fhfuih/MCEdit-Unified,Khroki/MCEdit-Unified,fhfuih/MCEdit-Unified,Khroki/MCEdit-Unified,fhfuih/MCEdit-Unified,Khroki/MCEdit-Unified