Win11 fix

[alexlee820]

A array index flowoccur in win11 , added a if statement to prevent array index overflow occur

[alexlee820]

Here is the detail of the error occur in windows11.
After tracing the crash stack and conducting some debugging in Visual Studio, I found that the issue actually occurs during the PEB walk. Due to some changes in Windows, the buffer length for BaseDllName is not zero even when the buffer of BaseDllName is NULL. As a result, when a DLL hasn’t been loaded into memory and the PEB walk reaches the end where BaseDllName is null, there can be an array index overflow in the utf16_to_utf8 function.