[BUG] ndbranches in interior-mut3-fail.main.expected

[Stevengre]

Here is the original discussion: #811 (comment)

[Stevengre]

#cast ( PtrLocal ( 0 , place ( ... local: local ( 1 ) , projection: projectionElemField ( fieldIdx ( 0 ) , ty ( 16 ) )  .ProjectionElems ) , mutabilityNot , metadata ( noMetadataSize , 0 , noMetadataSize ) ) , castKindTransmute , ty ( 31 ) , ty ( 32 ) )

thunk for transmuting pointer to uint.

Type 31: PtrT(pointee_type=1)
Type 1: TupleT(components=[], layout=LayoutShape(fields=ArbitraryFields(offsets=[]), variants=Single(index=0), abi=ValueAbi(), abi_align=1, size=MachineSize(num_bits=0)))
Type 32: UintT(info=<UintTy.U64: 8>)