Merge topic 'check-pthreads-static'

b4f17e5b44 FindThreads: Fix pthreads detection with -Wmissing-prototypes

Acked-by: Kitware Robot <[email protected]>
Acked-by: buildbot <[email protected]>
Merge-request: !9449

Modules/CheckForPthreads.c

@@ -1,6 +1,6 @@
 #include <pthread.h>
 
-void* start_routine(void* args)
+static void* start_routine(void* args)
 {
   return args;
 }