[interpreter] Properly collect for-in slow mode feedback.

test/unittests/interpreter/register-translator-unittest.cc

Index: test/unittests/interpreter/register-translator-unittest.cc
diff --git a/test/unittests/interpreter/register-translator-unittest.cc b/test/unittests/interpreter/register-translator-unittest.cc
index e9f65a6af0b25429d84f2e78fa2cca0642f7e9b2..45f5fce85475cb0f48a12444414a3fc50cfa1a4d 100644
--- a/test/unittests/interpreter/register-translator-unittest.cc
+++ b/test/unittests/interpreter/register-translator-unittest.cc
@@ -249,9 +249,9 @@ TEST_F(RegisterTranslatorTest, BadRange2) {
   Register cache_info_pair(194);
   Register cache_info_pair_translated(cache_info_pair.index() + window_width());
   uint32_t operands[] = {receiver.ToRawOperand(), index.ToRawOperand(),
-                         cache_info_pair.ToRawOperand()};
+                         cache_info_pair.ToRawOperand(), 1};
   ASSERT_DEATH_IF_SUPPORTED(
-      translator()->TranslateInputRegisters(Bytecode::kForInNext, operands, 3),
+      translator()->TranslateInputRegisters(Bytecode::kForInNext, operands, 4),
       kBadOperandRegex);
 }