lv_mem_realloc: just truncate mem if smaller then then the old

lv_misc/lv_anim.c

@@ -92,7 +92,7 @@ void lv_anim_create(lv_anim_t * anim_p)
 }
 
 /**
- * Delete an animation for a variable with a given animatior function
+ * Delete an animation for a variable with a given animator function
  * @param var pointer to variable
  * @param fp a function pointer which is animating 'var',
  *           or NULL to delete all animations of 'var'