fix charef parsing

fix bugs like this:
&redirect => ®direct

Author: Azq2

source/myhtml/charef.c

@@ -140,14 +140,12 @@ const charef_entry_t * myhtml_charef_find_by_pos(size_t pos, const char *begin,
 
     result->is_done = 1;
 
-    if(named_character_references[pos].codepoints_len)
-        return &named_character_references[pos];
-    else if(result->last_entry) {
+    if(result->last_entry) {
         *offset = result->last_offset;
         return result->last_entry;
     }
 
-    return &named_character_references[pos];
+    return &named_character_references[0];
 }