use EAC_init() and EAC_cleanup()

npa/src/example.c

@@ -71,6 +71,9 @@ main (int argc, char **argv)
         exit(1);
     }
 
+    /* initialize OpenPACE */
+    EAC_init();
+
 
     /* Now we try to change the PIN. Therefor we need to establish a SM channel
      * with PACE.
@@ -128,6 +131,7 @@ err:
     sc_reset(card, 1);
     sc_disconnect_card(card);
     sc_release_context(ctx);
+    EAC_cleanup();
 
     return -r;
 }