livepatch: Fix several code style issues

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I60MKD


CVE: NA

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Fix several code style issues:
- Do not use magic numbers.The number is 10
- Do not use parentheses when printing numbers.
- Braces {} are not necessary for single statement blocks
- Do not add blank lines on the start of a code block defined by braces.

Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
Reviewed-by: Kuohai Xu <xukuohai@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>