Don't do clean shutdown on Process.exit()

runtime/bin/main.cc

Index: runtime/bin/main.cc
diff --git a/runtime/bin/main.cc b/runtime/bin/main.cc
index 91b3f8223f2ae175b8750e4a1ab24e0aa99a032a..1f20666a2c2e44373ef8e02e82b232a0e1a190d5 100644
--- a/runtime/bin/main.cc
+++ b/runtime/bin/main.cc
@@ -118,7 +118,10 @@ static const int kErrorExitCode = 255;
 // Exit code indicating a vm restart request.  Never returned to the user.
 static const int kRestartRequestExitCode = 1000;
 
-extern bool do_vm_shutdown;  // Defined in bin/process.cc
+// Global flag that is used to indicate that the VM should do a clean
+// shutdown.
+static bool do_vm_shutdown = false;
+
 static void ErrorExit(int exit_code, const char* format, ...) {
   va_list arguments;
   va_start(arguments, format);