Do not display the parent dir link at the root

If fancy indexing is used at the root of a webserver, it will still display
a "Parent Directory" link even when listing the webserver's root. This should
not happen as it outputs a useless link.

ngx_http_fancyindex_module.c

@@ -595,6 +595,13 @@ make_content_buf(
         + ngx_sizeof_ssz(t07_list2)
         ;
 
+    /*
+     * If we are a the root of the webserver (URI =  "/" --> length of 1),
+     * do not display the "Parent Directory" link.
+     */
+    if(r->uri.len == 1)
+        len -= ngx_sizeof_ssz(t_parentdir_entry);
+
     entry = entries.elts;
     for (i = 0; i < entries.nelts; i++) {
         /*
@@ -718,7 +725,8 @@ make_content_buf(
 
     tp = ngx_timeofday();
 
-    /* "Parent dir" entry, always first */
+    /* "Parent dir" entry, always first if displayed */
+    if(r->uri.len > 1){
          b->last = ngx_cpymem_ssz(b->last,
 	                         "<tr>"
 	                         "<td><a href=\"../");
@@ -732,6 +740,7 @@ make_content_buf(
                                  "<td>-</td>"
                                  "<td>-</td>"
                                  "</tr>");
+    }
 
     /* Entries for directories and files */
     for (i = 0; i < entries.nelts; i++) {