Fix leaks related to the usage of JSE runtime data

fxjs/cfxjse_runtimedata.h

Index: fxjs/cfxjse_runtimedata.h
diff --git a/fxjs/cfxjse_runtimedata.h b/fxjs/cfxjse_runtimedata.h
index 34f8f32d921bf9e90abd61ca4c97b36b8fbcb94b..292fe26ae335225eb435c29ac62b67eb3a44890c 100644
--- a/fxjs/cfxjse_runtimedata.h
+++ b/fxjs/cfxjse_runtimedata.h
@@ -7,6 +7,8 @@
 #ifndef FXJS_CFXJSE_RUNTIMEDATA_H_
 #define FXJS_CFXJSE_RUNTIMEDATA_H_
 
+#include <memory>
+
 #include "v8/include/v8.h"
 
 class CFXJSE_RuntimeList;
@@ -24,7 +26,7 @@ class CFXJSE_RuntimeData {
  protected:
   explicit CFXJSE_RuntimeData(v8::Isolate* pIsolate);
 
-  static CFXJSE_RuntimeData* Create(v8::Isolate* pIsolate);
+  static std::unique_ptr<CFXJSE_RuntimeData> Create(v8::Isolate* pIsolate);
 
  private:
   CFXJSE_RuntimeData(const CFXJSE_RuntimeData&) = delete;