i386 compile error

src/sandbox.c

@@ -50,13 +50,13 @@ int manageSyscall(struct s_sandboxenv *env)
 	int syscall_nr;
 
 #ifdef __x86_64__
-	syscall_nr = env->registers.orig_rax;
+	syscall_nr = (int) env->registers.orig_rax;
 #else
-	syscall_nr = env->registers.orig_eax;
+	syscall_nr = (int) env->registers.orig_eax;
 #endif
 
-	if (env->registers.orig_rax >= NR_syscalls ||
-			!(ovr_fnc = env->functions[(int) env->registers.orig_rax]))
+	if (syscall_nr >= NR_syscalls ||
+			!(ovr_fnc = env->functions[syscall_nr]))
 		return 0;
 	get_args(env);
 	(ovr_fnc)(env);