fix random chars array length

lib/IdPAccountManager/Tools.pm

@@ -42,7 +42,7 @@ sub generate_password {
         '{,        }',        '[',        ']',
         '.',        '=',        '-',        '#'
     );
-    foreach (6 .. $length_of_randomstring) {
+    foreach (5 .. $length_of_randomstring) {
 
         # rand @chars will generate a random
         # number between 0 and scalar @chars