Fix calls of strict mode function with an implicit receiver.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 9074793ffdd8786af73dac571afe0b25115e0ed5..45f33db510b465b5bc8ce365d812c37d8a68cd5a 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -746,8 +746,9 @@ class CallFunctionStub: public CodeStub {
   }
 
   InLoopFlag InLoop() { return in_loop_; }
-  bool ReceiverMightBeValue() {
-    return (flags_ & RECEIVER_MIGHT_BE_VALUE) != 0;
+
+  bool ReceiverMightBeImplicit() {
+    return (flags_ & RECEIVER_MIGHT_BE_IMPLICIT) != 0;
   }
 };