Update crack.adoc (#74)

Jelleas · web-flow · commit c00c08c6eee6 · 2021-09-29T18:42:51.000+02:00
diff --git a/crack/crack.adoc b/crack/crack.adoc
@@ -93,12 +93,11 @@ Be sure to read up on `crypt`, taking particular note of its mention of "salt":
 man crypt
 ----
 
-Per that man page, you'll likely want to put
+You'll likely want to put
 
 [source,c]
 ----
-#define _XOPEN_SOURCE
-#include <unistd.h>
+#include <crypt.h>
 ----
 
 at the top of your file in order to use `crypt`.
