Fix remaining test files: replace POSIX headers with platform_compat.h

tests/debug_performance.c

@@ -1,9 +1,9 @@
 #include "../lib/u_async.h"
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
-#include <sys/socket.h>
-#include <fcntl.h>
+#include "../lib/platform_compat.h"
+
+
 #include "../lib/u_async.h"
 #include "../lib/debug_config.h"