src: Fix gcc 12 link error.

[ossama-othman]

Declare inline functions with the static storage class to address
"undefined reference" link-time errors that occur when building mptcpd
with gcc-12.

Co-authored-by: Mat Martineau mathew.j.martineau@linux.intel.com

[coveralls]

Pull Request Test Coverage Report for Build 2106528735

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.05%) to 53.707%

---

Files with Coverage Reduction	New Missed Lines	%
src/path_manager.c	1	14.15%

Totals
Change from base Build 2005419859:	-0.05%
Covered Lines:	1072
Relevant Lines:	1996

---

💛 - Coveralls

[ossama-othman]

See GCC documentation on An Inline Function is As Fast As a Macro functions for related information on the static inline GCC C extension.

[mjmartineau]

Tested with F36 beta and gcc 12, builds fine. Thanks!