Fix Compiler Warnings & Migrate to ExAllocatePool2 ｜WDK 10

[hejdb]

Description

This PR addresses compiler warnings detected during the build process and replaces deprecated memory allocation API calls with ExAllocatePool2. The changes ensure compatibility with newer Windows Driver Kit (WDK) versions and improve memory allocation safety.

Changes

Fixed compiler warnings identified by static analysis and build checks.

Replaced occurrences of ExAllocatePoolWithTag with ExAllocatePool2 for improved security and future compatibility.

Updated relevant headers and ensured proper flag usage for ExAllocatePool2.

Verified successful build and tested basic memory allocation scenarios.

Rationale

Microsoft recommends using ExAllocatePool2 as it provides better security and control over memory allocations. The new API supports additional flags that enhance robustness and prevent potential vulnerabilities.

Testing

Successfully compiled with the latest WDK without warnings.

Verified correct allocation and deallocation behavior in a test driver.

Ensured that all modified code paths function as expected.

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