Fix super ==: Test first for null before call inf super ==.

runtime/vm/object.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 1250 matching lines @@
     return HasFinallyBit::decode(raw_ptr()->kind_tag_);
   }
   void set_has_finally(bool value) const;
 
   bool is_native() const { return NativeBit::decode(raw_ptr()->kind_tag_); }
   void set_is_native(bool value) const;
 
   bool is_abstract() const { return AbstractBit::decode(raw_ptr()->kind_tag_); }
   void set_is_abstract(bool value) const;
 
-  bool is_inlinable() const {
-    return InlinableBit::decode(raw_ptr()->kind_tag_) && HasCode();
-  }
+  bool IsInlineable() const;
   void set_is_inlinable(bool value) const;
 
   bool HasOptimizedCode() const;
 
   // Returns true if the argument counts are valid for calling this function.
   // Otherwise, it returns false and the reason (if error_message is not NULL).
   bool AreValidArgumentCounts(int num_arguments,
                               int num_named_arguments,
                               String* error_message) const;
 
@@ skipping 4488 matching lines @@
     if (this->CharAt(i) != str.CharAt(begin_index + i)) {
       return false;
     }
   }
   return true;
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_