Merge pull request #4 from medooze/dev/bcost/DIOS-5504-shutdowncrash

fix: [DIOS-5504] Prevent releasing to the V8 Isolate when it is shutting down

Lib/javascript/v8/javascriptrun.swg

@@ -16,7 +16,7 @@ typedef v8::PropertyCallbackInfo<v8::Value> SwigV8PropertyCallbackInfo;
 #define SWIGV8_HANDLESCOPE_ESC() v8::EscapableHandleScope scope(v8::Isolate::GetCurrent());
 #define SWIGV8_ESCAPE(val) return scope.Escape(val)
 
-#define SWIGV8_ADJUST_MEMORY(size) v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(size)
+#define SWIGV8_ADJUST_MEMORY(size) if (v8::Isolate::GetCurrent()) v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(size)
 #define SWIGV8_CURRENT_CONTEXT() v8::Isolate::GetCurrent()->GetCurrentContext()
 #define SWIGV8_THROW_EXCEPTION(err) v8::Isolate::GetCurrent()->ThrowException(err)