Compiling warning with CUDA

[dyzheng]

Describe the Code Quality Issue

Additional Context

No response

Task list for Issue attackers (only for developers)

• Identify the specific code file or section with the code quality issue.
• Investigate the issue and determine the root cause.
• Research best practices and potential solutions for the identified issue.
• Refactor the code to improve code quality, following the suggested solution.
• Ensure the refactored code adheres to the project's coding standards.
• Test the refactored code to ensure it functions as expected.
• Update any relevant documentation, if necessary.
• Submit a pull request with the refactored code and a description of the changes made.

[WHUweiqingzhou]

@Critsium-xy could you have a look?

[Critsium-xy]

I partially fixed it here #5444
Warnings in plain_mixing.h may need someone else's help? I had never reached this part before