Properly treat exceptions thrown while compiling.

src/execution.cc

Index: src/execution.cc
diff --git a/src/execution.cc b/src/execution.cc
index 11dacfeede76912a9a0c4984eb7a2384238b5e07..f484d8d9b819af699e25786c8b66b8167441afe1 100644
--- a/src/execution.cc
+++ b/src/execution.cc
@@ -403,6 +403,7 @@ void StackGuard::ThreadLocal::Initialize() {
   if (real_climit_ == kIllegalLimit) {
     // Takes the address of the limit variable in order to find out where
     // the top of stack is right now.
+    const uintptr_t kLimitSize = FLAG_stack_size * KB;
     uintptr_t limit = reinterpret_cast<uintptr_t>(&limit) - kLimitSize;
     ASSERT(reinterpret_cast<uintptr_t>(&limit) > kLimitSize);
     real_jslimit_ = SimulatorStack::JsLimitFromCLimit(limit);