Fix objects with MF_FIRE disappearing in lava (Closes #366)
Currently, there is only an exception made for two object names, which is quite a silly hack. This should make all fire objects work with lava.
Tested and verified by @Glaber. 
Currently, there is only an exception made for two object names, which is quite a silly hack. This should make all fire objects work with lava.
Tested and verified by @Glaber.