[interpreter] Add a safety-net for interpreter entry.

src/bailout-reason.h

Index: src/bailout-reason.h
diff --git a/src/bailout-reason.h b/src/bailout-reason.h
index 6044a896aaec04c52cfc335ae1c461c7ba9c9ee5..1fc1fe933606c09df81c41da8e582253349cad49 100644
--- a/src/bailout-reason.h
+++ b/src/bailout-reason.h
@@ -250,6 +250,8 @@ namespace internal {
   V(kUnsupportedPhiUseOfArguments, "Unsupported phi use of arguments")         \
   V(kUnsupportedPhiUseOfConstVariable,                                         \
     "Unsupported phi use of const variable")                                   \
+  V(kUnexpectedReturnFromBytecodeHandler,                                      \
+    "Unexpectedly returned from a bytecode handler")                           \
   V(kUnexpectedReturnFromThrow, "Unexpectedly returned from a throw")          \
   V(kUnsupportedSwitchStatement, "Unsupported switch statement")               \
   V(kUnsupportedTaggedImmediate, "Unsupported tagged immediate")               \
@@ -264,7 +266,6 @@ namespace internal {
     "Should not directly enter OSR-compiled function")                         \
   V(kYield, "Yield")
 
-
 #define ERROR_MESSAGES_CONSTANTS(C, T) C,
 enum BailoutReason {
   ERROR_MESSAGES_LIST(ERROR_MESSAGES_CONSTANTS) kLastErrorMessage