[Minor] Fix off-by-one read

diff --git a/src/libserver/html/html_entities.cxx b/src/libserver/html/html_entities.cxx
index 0d5b7d4de457ef9348c5a06ba0cdd15e0c3b4b6c..9ed080d4f984b9c555280257dd6fd3ee5644da90 100644 (file)
--- a/src/libserver/html/html_entities.cxx
+++ b/src/libserver/html/html_entities.cxx
@@ -2283,9 +2283,9 @@ decode_html_entitles_inplace(char *s, std::size_t len, bool norm_spaces)
                        heuristic_lookup_func(2);
 
                        /* Leave undecoded */
-                       if (!entity_def && (end - t > h - e + 1)) {
-                               memmove(t, e, h - e + 1);
-                               t += h - e + 1;
+                       if (!entity_def && (end - t > h - e)) {
+                               memmove(t, e, h - e);
+                               t += h - e;
                        }
                        else if (entity_def) {
                                return true;