Add comment to explain the behavior

Author: airween

apache2/msc_xml.c

@@ -36,7 +36,7 @@ static void msc_xml_on_start_elementns(
     xml_parser_state->pathlen += (taglen + 1);
     char *newpath = apr_pstrcat(msr->mp, xml_parser_state->currpath, ".", (char *)localname, NULL);
     xml_parser_state->currpath = newpath;
-    xml_parser_state->currpathbufflen += taglen + 1;
+    xml_parser_state->currpathbufflen += taglen + 1; // +1 for the '.' character here too
 
     int *new_stack_item = (int *)apr_array_push(xml_parser_state->has_child_stack);
     *new_stack_item = 0;