Use memcpy instead of character-by-character copying

Author: ArtUkrainskiy

ext/standard/html.c

@@ -939,13 +939,14 @@ static void traverse_for_entities(
             current_ptr = entity_end_ptr + 1;
         } else {
             /* If the entity is invalid, copy characters from current_ptr up to entity_end_ptr */
-            if (entity_end_ptr) {
-                for (; current_ptr < entity_end_ptr; current_ptr++) {
-                    *output_ptr++ = *current_ptr;
-                }
-            } else {
-                *output_ptr++ = *current_ptr++;
-            }
+        	if (entity_end_ptr) {
+        		size_t len = entity_end_ptr - current_ptr;
+        		memcpy(output_ptr, current_ptr, len);
+        		output_ptr += len;
+        		current_ptr = entity_end_ptr;
+        	} else {
+        		*output_ptr++ = *current_ptr++;
+        	}
         }
     }