e - xsettings - calloc buffer since we leave 3 of 4 bytes unset

the first 4 bytes is a msb/lsb thing for xsetttings - we ignore 3 of
the 4 bytes. thus we should just calloc the whole buffer to ensure its 0

src/bin/e_xsettings.c

@@ -334,7 +334,7 @@ _e_xsettings_apply(Settings_Manager *sm)
    EINA_LIST_FOREACH(settings, l, s)
      len += s->length;
 
-   pos = data = malloc(len);
+   pos = data = calloc(1, len);
    if (!data) return;
 
 #if __BYTE_ORDER == __LITTLE_ENDIAN