inference: add missing reset for stmt_info

This only would matter if we transition a call from T -> Union{}, which
is unlikely to happen, and even less likely to be observed, but it is
more correct this way.

Author: vtjnash

base/compiler/abstractinterpretation.jl

@@ -1393,6 +1393,7 @@ function typeinf_local(interp::AbstractInterpreter, frame::InferenceState)
             frame.currpc = pc
             frame.cur_hand = frame.handler_at[pc]
             frame.stmt_edges[pc] === nothing || empty!(frame.stmt_edges[pc])
+            frame.stmt_info[pc] = nothing
             stmt = frame.src.code[pc]
             changes = s[pc]::VarTable
             t = nothing