[interpreter] Fix label binding for unreached labels.

test/webkit/webkit.status

 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
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@@ skipping 82 matching lines @@
 }],  # 'gc_stress == True'
 
 ['gc_stress == True and mode == debug', {
   # Skip tests that timeout.
 }],  # 'gc_stress == True and mode == debug'
 
 ##############################################################################
 ['ignition == True', {
   # TODO(4680): Throws a RangeError due to stack overflow. Need investigation.
   'fast/js/excessive-comma-usage': [SKIP],  # Stack is brittle, SKIP not FAIL.
-
-  # TODO(4680): Assertion is C++ collection, looks like ordinary bug.
-  'fast/js/parser-syntax-check': [SKIP],  # Only some C++ libs, SKIP not FAIL.
 }],  # ignition == True
 
 ##############################################################################
 ['gcov_coverage', {
   # Tests taking too long or getting too large call stacks.
   'fast/js/excessive-comma-usage': [SKIP],
   'run-json-stringify': [SKIP],
 }],  # 'gcov_coverage'
 
 ##############################################################################
 ]