Fixed out-of-boundary write in slow candidates mode in combinator attack update

src/slow_candidates.c

@@ -315,14 +315,18 @@ void slow_candidates_next (hashcat_ctx_t *hashcat_ctx, void *extra_info)
 
     // this can overflow so we move it up
 
-    extra_info_combi->out_len += line_len;
-
-    if (extra_info_combi->out_len <= sizeof (extra_info_combi->out_buf))
+	if ((extra_info_combi->out_len + line_len) <= sizeof (extra_info_combi->out_buf))
     {
       memcpy (extra_info_combi->out_buf + extra_info_combi->out_len, line_buf, line_len);
 
+      extra_info_combi->out_len += line_len;
+
       memset (extra_info_combi->out_buf + extra_info_combi->out_len, 0, sizeof (extra_info_combi->out_buf) - extra_info_combi->out_len);
     }
+	else
+    {
+      extra_info_combi->out_len += line_len;
+    }
 
     extra_info_combi->comb_pos_prev = extra_info_combi->comb_pos;