Add missing pthread header (#22833)

diff --git a/examples/platform/linux/NamedPipeCommands.cpp b/examples/platform/linux/NamedPipeCommands.cpp
index 4d78cd4..7eea3eb 100644
--- a/examples/platform/linux/NamedPipeCommands.cpp
+++ b/examples/platform/linux/NamedPipeCommands.cpp
@@ -20,6 +20,7 @@
 
 #include <fcntl.h>
 #include <lib/support/CodeUtils.h>
+#include <pthread.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>