Add missing alias __modify_ldt

libc/sysdeps/linux/common/syscalls.c

@@ -1248,6 +1248,7 @@ _syscall1(int, uname, struct utsname *, buf);
 #ifdef __NR_modify_ldt
 #ifdef L_modify_ldt
 _syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount);
+weak_alias(adjtimex, __modify_ldt);
 #endif
 #endif