Fix FTBFS

(cherry picked from commit 5d1425e164)

indexlib/mmap_manager.cpp

@@ -39,6 +39,7 @@
 #include <sys/stat.h>
 #include <unistd.h>
 #include <cstring>
+#include <stdio.h>
 #include "format.h"
 
 using indexlib::detail::errno_error;