Rename incorrectly named flag

src/openrct2/paint/tile_element/scenery.c

@@ -93,7 +93,7 @@ void scenery_paint(paint_session * session, uint8 direction, sint32 height, rct_
                 y_offset = 3;
                 boxlength.x = 26;
                 boxlength.y = 26;
-                if (entry->small_scenery.flags & SMALL_SCENERY_FLAG_ALLOW_WALLS) {
+                if (entry->small_scenery.flags & SMALL_SCENERY_FLAG_NO_WALLS) {
                     x_offset = 1;
                     y_offset = 1;
                     boxlength.x = 30;

src/openrct2/world/SmallScenery.cpp

@@ -263,7 +263,7 @@ static money32 SmallSceneryPlace(sint16 x,
     if (flags & GAME_COMMAND_FLAG_APPLY && !(flags & GAME_COMMAND_FLAG_GHOST))
     {
         footpath_remove_litter(x, y, targetHeight);
-        if (!gCheatsDisableClearanceChecks && (sceneryEntry->small_scenery.flags & SMALL_SCENERY_FLAG_ALLOW_WALLS))
+        if (!gCheatsDisableClearanceChecks && (sceneryEntry->small_scenery.flags & SMALL_SCENERY_FLAG_NO_WALLS))
         {
             wall_remove_at(x, y, targetHeight, targetHeight + sceneryEntry->small_scenery.height);
         }

src/openrct2/world/Wall.cpp

@@ -228,7 +228,7 @@ static bool WallCheckObstruction(rct_scenery_entry * wall,
         case TILE_ELEMENT_TYPE_SMALL_SCENERY:
             entryType = tileElement->properties.scenery.type;
             entry = get_small_scenery_entry(entryType);
-            if (entry->small_scenery.flags & SMALL_SCENERY_FLAG_ALLOW_WALLS)
+            if (entry->small_scenery.flags & SMALL_SCENERY_FLAG_NO_WALLS)
             {
                 map_obstruction_set_error_text(tileElement);
                 return false;

src/openrct2/world/scenery.h

@@ -68,7 +68,7 @@ typedef enum {
     SMALL_SCENERY_FLAG_HAS_FRAME_OFFSETS = (1 << 15),           // 0x8000
     SMALL_SCENERY_FLAG17 = (1 << 16),                           // 0x10000
     SMALL_SCENERY_FLAG_STACKABLE = (1 << 17),                   // 0x20000; means scenery item can be placed in the air and over water
-    SMALL_SCENERY_FLAG_ALLOW_WALLS = (1 << 18),                 // 0x40000
+    SMALL_SCENERY_FLAG_NO_WALLS = (1 << 18),                    // 0x40000
     SMALL_SCENERY_FLAG_HAS_SECONDARY_COLOUR = (1 << 19),        // 0x80000
     SMALL_SCENERY_FLAG_NO_SUPPORTS = (1 << 20),                 // 0x100000
     SMALL_SCENERY_FLAG_VISIBLE_WHEN_ZOOMED = (1 << 21),         // 0x200000