core: Variables are nil by default.
core: Variables are nil by default.

Former-commit-id: 2e6c9a2eecbb5e51fc875ef6babbc28166bf291f [formerly 901dbfd66c482c311e0e549de137655b3b96c2b4]
Former-commit-id: 64533d73b7d0fab34f8a690564f8d66c09268268
torhve/ivar2,torhve/ivar2,torhve/ivar2,haste/ivar2