Picked up a memory leak point at CCFileUtilWin32.cpp

cocos2d-x-2.1.4\cocos2dx\platform\win32\ccfileutilswin32.cpp(57) : {3139} normal block at 0x02DD0760, 80 bytes long.
Data: <T & P > 54 DD 80 0F 00 00 00 00 80 26 1F 09 50 D8 1E 09

This is just a new which I found it is released in purgeFileUtils();
@ s_sharedFileUtils = new CCFileUtilsWin32();
@

I am some sense curious that sometimes I also encounter some pointers that cannot be deleted even “delete” is called
Is it a valid catch of memory leak?