* directoryiterator: Fix missing inline
Add missing inline to inline function.
This was found with clang-tidy check: misc-definitions-in-headers
* Convert deprecated throw() to noexcept
throw() has been deprecated in standar in C++17. It has been removed in
C++20. Code still compiles but let's just define these at those should
be.
These where found with clang-tidy check: modernize-use-noexcept
* Fix unnecessary copy initializations
Clang-tidy did find these with check:
performance-unnecessary-copy-initialization
* Fix some strings not references
Looks like these are just missing reference marks.
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Co-authored-by: Kari Argillander <kari.argillander@fidelix.com>
