const internal/types/errors.InvalidIterVar

5 uses

	internal/types/errors (current package)
		code_string.go#L115: 	_ = x[InvalidIterVar-108]
		codes.go#L1005: 	InvalidIterVar

	go/types
		range.go#L77: 			check.softErrorf(sKey, InvalidIterVar, "range over %s permits no iteration variables", &x)
		range.go#L79: 			check.softErrorf(sValue, InvalidIterVar, "range over %s permits only one iteration variable", &x)
		range.go#L81: 			check.softErrorf(sExtra, InvalidIterVar, "range clause permits at most two iteration variables")