Bring in WebKit r74029 to fix the build with clang.

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r74029 | [email protected] | 2010-12-14 18:57:14 +0200 (Tue, 14 Dec 2010) | 12 lines

Reviewed by Eric Seidel.

Clang fails to build the JSC interpreter
https://bugs.webkit.org/show_bug.cgi?id=51016

Clang does not allow indirect gotos out of scopes with cleanup. GCC 4.2 allows
them, but it does not correctly generate the cleanup, causing a leak if the
cleanup decrements a reference count.

* interpreter/Interpreter.cpp:
(JSC::Interpreter::privateExecute): Put an Identifier into its own scope.
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Cherry-picked from qtscript/c85662167123b433a69a662212c67ce03e44a25a.

Change-Id: I21ee882961264d131cebdee04cb641c0d0de3d18
Reviewed-by: Simon Hausmann <[email protected]>

Author: rakuco

src/3rdparty/javascriptcore/JavaScriptCore/interpreter/Interpreter.cpp

@@ -2493,8 +2493,10 @@ JSValue Interpreter::privateExecute(ExecutionFlag flag, RegisterFile* registerFi
             vPC += OPCODE_LENGTH(op_get_by_pname);
             NEXT_INSTRUCTION();
         }
-        Identifier propertyName(callFrame, subscript.toString(callFrame));
-        result = baseValue.get(callFrame, propertyName);
+        {
+            Identifier propertyName(callFrame, subscript.toString(callFrame));
+            result = baseValue.get(callFrame, propertyName);
+        }
         CHECK_FOR_EXCEPTION();
         callFrame->r(dst) = result;
         vPC += OPCODE_LENGTH(op_get_by_pname);