Commit [7f5221] Maximize Restore History

make sure LVAR-EXTERNALLY-CHECKABLE-TYPE always returns a type

Fixes bug reported by Eric Marsden on sbcl-devel.

Nikodemus Siivola Nikodemus Siivola 2011-07-27

changed src/compiler/ir1opt.lisp
changed tests/compiler.pure.lisp
changed NEWS
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