Jack Conradson 2b838d1ea6 fix expression type for null safe operator (#63367)
An invalid void expression type from a null safe operator caused ClassFormatError for the script Map 
x= ['0': 0]; x?.0 > 1. This change sets and propagates the correct expression type for the null safe 
operator to be written out.
2020-10-06 16:02:56 -07:00
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