Free digest on completion [CID-106]

kuser/kdigest.c

@@ -121,6 +121,8 @@ digest_server_init(struct digest_server_init_options *opt,
     }
     printf("opaque=%s\n", krb5_digest_get_opaque(context, digest));
 
+    krb5_digest_free(digest);
+
     return 0;
 }
 
@@ -213,6 +215,8 @@ digest_server_request(struct digest_server_request_options *opt,
 	free(key);
     }
 
+    krb5_digest_free(digest);
+
     return 0;
 }