fix: clean up code to eliminate compilation warnings

[Howard229]

1. Assign an initial value of 0 to the 'nSockets_base' variable to prevent the compilation warning 'may be used uninitialized in this function'.
2. Delete the 'blockNum' variable, which is defined but not used in the 'polar_bulk_read_buffer_common' function.
3. Delete the unused function definition 'px_show_scan_unit_size' from the 'guc_px.c' file. The implementation of this function has been removed in the d52e825 commit.

[polardb-bot]

Hi @Howard229 ~ Thanks for your contribution in this PR. ❤️

Please make sure that your PR conforms the standard, and has passed all the checks.

We will review your PR as soon as possible.

[polardb-bot]

Hey @Howard229 :

Something wrong occuried during the checks of your commit 😟, please check the detail:

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[polardb-bot]

Hey @Howard229 :

Congratulations~ 🎉 Your commit has passed all the checks. Please wait for further manual review.

[Howard229]

1、为nSockets_base变量赋初始值0，防止编译告警‘may be used uninitialized in this function’；
2、删除polar_bulk_read_buffer_common函数中定义但未使用的blockNum变量；
3、删除guc_px.c文件中多余的函数定义px_show_scan_unit_size，该函数的实现在d52e8258f4cfd4b6fc50d36d7149e9131a6581f3提交中已经被删除。

[Howard229]

Hey @mrdrivingduck , could you help me review&merge it

[mrdrivingduck]

@Howard229 better to edit your commit title and commit message to explain what you have changed. The code itself LGTM.

[Howard229]

@Howard229 better to edit your commit title and commit message to explain what you have changed. The code itself LGTM.

Okay, I'll make some modifications

[polardb-bot]

Hey @Howard229 :

Congratulations~ 🎉 Your commit has passed all the checks. Please wait for further manual review.

[Howard229]

@Howard229 better to edit your commit title and commit message to explain what you have changed. The code itself LGTM.

Hey @mrdrivingduck , I have updated the commit title and commit message. Could you please review them again?

[mrdrivingduck]

/rebase-and-merge

[polardb-bot]

@mrdrivingduck PR has been merged. 🍗

Thanks again for the contributors involved in this thread: ❤️

• @Howard229