Fix default skin error on launching MTA

Author: Dutchman101

vendor/cegui-0.4.0-custom/src/tinyxml/tinystr.cpp

@@ -181,13 +181,13 @@ void TiXmlString::append( const char* str, int len )
     {
         // we know we can safely append the new string
         // strncat (cstring, str, len);
-	unsigned old_length = current_length;
-	current_length = new_size - 1;
-	memcpy (cstring + old_length, 
+    unsigned old_length = current_length;
+    memcpy (cstring + old_length, 
                 str,
                 size_suffix);
-        cstring [current_length] = 0;
     }
+    current_length = new_size - 1;
+    cstring[current_length] = 0;
 }