Cleanup: Clang-Tidy, modernize-use-using

Replace `typedef` with `using` in C++ code.

In the case of `typedef struct SomeName { ... } SomeName;` I removed the
`typedef` altogether, as this is unnecessary in C++. Such cases have been
rewritten to `struct SomeName { ... };`

No functional changes.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/blenlib/intern/threads.cc b/source/blender/blenlib/intern/threads.cc
index 0586c361350..0b88cf53442 100644
--- a/source/blender/blenlib/intern/threads.cc
+++ b/source/blender/blenlib/intern/threads.cc
@@ -132,13 +132,13 @@ static int num_threads_override = 0;
 /* just a max for security reasons */
 #define RE_MAX_THREAD BLENDER_MAX_THREADS
 
-typedef struct ThreadSlot {
+struct ThreadSlot {
   struct ThreadSlot *next, *prev;
   void *(*do_thread)(void *);
   void *callerdata;
   pthread_t pthread;
   int avail;
-} ThreadSlot;
+};
 
 void BLI_threadapi_init(void)
 {