Robert Widmann d42ac6264f Account for Deserialized VarDecls in Setter Mismatch Diagnostics ...

If the setter conflict occurs in a deserialized declaration, the parent
pattern binding can be NULL. Guard the fixit on the existence of the
pattern binding so

1) we don't crash
2) we don't try to emit a fixit in otherwise extremely broken code

rdar://56558082

2020-05-21 19:22:09 -07:00

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witness_fix_its_other_module.swift

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