Fix Apple OsLogLogger build on visionOS

Recent includes refactoring led to missing one here.

Co-authored-by: Pāvels Nadtočajevs <7645683+bruvzg@users.noreply.github.com>

Author: akien-mga

drivers/apple/os_log_logger.cpp

@@ -33,7 +33,8 @@
 #include "core/object/script_backtrace.h"
 #include "core/string/print_string.h"
 
-#include <cstdlib> // For malloc/free
+#include <cstdlib> // For malloc/free.
+#include <cstdio> // For vsnprintf.
 
 OsLogLogger::OsLogLogger(const char *p_subsystem) {
 	const char *subsystem = p_subsystem;