Fix some warnings

src/lv_draw/lv_draw_blend.c

@@ -574,7 +574,6 @@ static void map_normal(const lv_area_t * disp_area, lv_color_t * disp_buf,  cons
 
         /*Buffer the result color to avoid recalculating the same color*/
         lv_color_t res_color;
-        lv_opa_t last_mask = LV_OPA_TRANSP;
         res_color.full = disp_buf_tmp[0].full;
 
         /*Only the mask matters*/

src/lv_draw/lv_img_buf.c

@@ -547,9 +547,9 @@ static inline bool transform_anti_alias(lv_img_transform_dsc_t * dsc)
     lv_color_t c11;
 
     lv_opa_t a00 = dsc->res.opa;
-    lv_opa_t a10;
-    lv_opa_t a01;
-    lv_opa_t a11;
+    lv_opa_t a10 = 0;
+    lv_opa_t a01 = 0;
+    lv_opa_t a11 = 0;
 
     if(dsc->tmp.native_color) {
         memcpy(&c01, &src_u8[dsc->tmp.pxi + dsc->tmp.px_size * xn], sizeof(lv_color_t));

src/lv_objx/lv_img.h

@@ -128,7 +128,7 @@ void lv_img_set_zoom(lv_obj_t * img, uint16_t zoom);
  * @param img pointer to an image object
  * @param antialias true: anti-aliased; false: not anti-aliased
  */
-void lv_img_set_antialais(lv_obj_t * img, bool antialias);
+void lv_img_set_antialias(lv_obj_t * img, bool antialias);
 
 /**
  * Set the style of an image
@@ -200,7 +200,7 @@ uint16_t lv_img_get_zoom(lv_obj_t * img);
  * @param img pointer to an image object
  * @return true: anti-aliased; false: not anti-aliased
  */
-bool lv_img_get_antialais(lv_obj_t * img);
+bool lv_img_get_antialias(lv_obj_t * img);
 
 /**
  * Get the style of an image object

src/lv_objx/lv_objmask.c

@@ -76,9 +76,9 @@ lv_obj_t * lv_objmask_create(lv_obj_t * par, const lv_obj_t * copy)
         lv_objmask_set_style(new_objmask, LV_OBJMASK_STYLE_BG, &lv_style_transp);
 
     }
-    /*Copy an existing object mask*/
+    /*TODO: Copy an existing object mask*/
     else {
-        lv_objmask_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
+        /* lv_objmask_ext_t * copy_ext = lv_obj_get_ext_attr(copy); */
 
         /*Refresh the style with new signal function*/
         lv_obj_refresh_style(new_objmask);