evas: fix missing render2_walk initializers

This caused annoying compiler warnings that are gone now.

@fix

src/lib/evas/canvas/evas_object_image.c

@@ -224,7 +224,8 @@ static const Evas_Object_Func object_func =
      NULL,
      evas_object_image_has_opaque_rect,
      evas_object_image_get_opaque_rect,
-     evas_object_image_can_map
+     evas_object_image_can_map,
+     NULL
 };
 
 static const Evas_Object_Image_Load_Opts default_load_opts = {

src/lib/evas/canvas/evas_object_line.c

@@ -84,6 +84,7 @@ static const Evas_Object_Func object_func =
    NULL,
    NULL,
    NULL,
+   NULL,
    NULL
 };
 

src/lib/evas/canvas/evas_object_polygon.c

@@ -85,6 +85,7 @@ static const Evas_Object_Func object_func =
      NULL,
      NULL,
      NULL,
+     NULL,
      NULL
 };
 

src/lib/evas/canvas/evas_object_smart.c

@@ -107,6 +107,7 @@ static const Evas_Object_Func object_func =
    NULL,
    NULL,
    NULL,
+   NULL,
    NULL
 };
 

src/lib/evas/canvas/evas_object_text.c

@@ -136,6 +136,7 @@ static const Evas_Object_Func object_func =
      evas_object_text_scale_update,
      NULL,
      NULL,
+     NULL,
      NULL
 };
 

src/lib/evas/canvas/evas_object_textblock.c

@@ -583,6 +583,7 @@ static const Evas_Object_Func object_func =
      evas_object_textblock_scale_update,
      NULL,
      NULL,
+     NULL,
      NULL
 };
 

src/lib/evas/canvas/evas_object_textgrid.c

@@ -162,6 +162,7 @@ static const Evas_Object_Func object_func =
    evas_object_textgrid_scale_update,
    NULL,
    NULL,
+   NULL,
    NULL
 };