tools: fix typo in postmortem generator

tools/gen-postmortem-metadata.py

 #!/usr/bin/env python
 
 #
 # Copyright 2012 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.
@@ skipping 150 matching lines @@
     { 'name': 'off_fp_args',
         'value': 'JavaScriptFrameConstants::kLastParameterOffset' },
 
     { 'name': 'scopeinfo_idx_nparams',
         'value': 'ScopeInfo::kParameterCount' },
     { 'name': 'scopeinfo_idx_nstacklocals',
         'value': 'ScopeInfo::kStackLocalCount' },
     { 'name': 'scopeinfo_idx_ncontextlocals',
         'value': 'ScopeInfo::kContextLocalCount' },
     { 'name': 'scopeinfo_idx_ncontextglobals',
-        'value': 'ScopeInfo::kContextLocalCount' },
+        'value': 'ScopeInfo::kContextGlobalCount' },
     { 'name': 'scopeinfo_idx_first_vars',
         'value': 'ScopeInfo::kVariablePartIndex' },
 
     { 'name': 'sharedfunctioninfo_start_position_mask',
         'value': 'SharedFunctionInfo::kStartPositionMask' },
     { 'name': 'sharedfunctioninfo_start_position_shift',
         'value': 'SharedFunctionInfo::kStartPositionShift' },
 
     { 'name': 'jsarray_buffer_was_neutered_mask',
         'value': 'JSArrayBuffer::WasNeutered::kMask' },
@@ skipping 400 matching lines @@
 
         out.write(footer);
 
 if (len(sys.argv) < 4):
         print('usage: %s output.cc objects.h objects-inl.h' % sys.argv[0]);
         sys.exit(2);
 
 load_objects();
 load_fields();
 emit_config();