Have mercy and don't kill the Context::Scope immediately after birth.

src/mksnapshot.cc

Index: src/mksnapshot.cc
diff --git a/src/mksnapshot.cc b/src/mksnapshot.cc
index 95d3daada250551011fa16e850bcb8346b1c78ac..acd45259c9b2ee76562cbc33d562bbccb75acc42 100644
--- a/src/mksnapshot.cc
+++ b/src/mksnapshot.cc
@@ -309,7 +309,7 @@ int main(int argc, char** argv) {
     // Capture 100 frames if anything happens.
     V8::SetCaptureStackTraceForUncaughtExceptions(true, 100);
     HandleScope scope(isolate);
-    v8::Context::Scope(v8::Local<v8::Context>::New(isolate, context));
+    v8::Context::Scope cscope(v8::Local<v8::Context>::New(isolate, context));
     const char* name = i::FLAG_extra_code;
     FILE* file = i::OS::FOpen(name, "rb");
     if (file == NULL) {