Fix potention buffer overflow

src/lib/unit.c

@@ -269,7 +269,7 @@ exactness_unit_file_read(const char *filename)
    unit = eet_data_read(file, _unit_desc_make(), "cache");
    for (i = 0; i < unit->nb_shots; i++)
      {
-        char entry[16];
+        char entry[32];
         Exactness_Image *ex_img = malloc(sizeof(*ex_img));
         sprintf(entry, "images/%d", i + 1);
         ex_img->pixels = eet_data_image_read(file, entry,
@@ -313,7 +313,7 @@ exactness_unit_file_write(Exactness_Unit *unit, const char *filename)
    eet_data_write(file, _unit_desc_make(), "cache", unit, EINA_TRUE);
    EINA_LIST_FOREACH(unit->imgs, itr, ex_img)
      {
-        char entry[16];
+        char entry[32];
         sprintf(entry, "images/%d", i++);
         eet_data_image_write(file, entry,
               ex_img->pixels, ex_img->w, ex_img->h, 0xFF,