fixes functions that were virtual but not tagged as override.

components/esm3/loadland.hpp

@@ -130,8 +130,8 @@ namespace ESM
             std::span<const uint16_t> getTextures() const override { return mTextures; }
             float getSize() const override { return REAL_SIZE; }
             float getMinHeight() const override { return mMinHeight; }
-            float getMaxHeight() const { return mMaxHeight; }
+            float getMaxHeight() const override { return mMaxHeight; }
-            int getLandSize() const { return LAND_SIZE; }
+            int getLandSize() const override { return LAND_SIZE; }
         };
 
         // low-LOD heightmap (used for rendering the global map)

components/esm4/loadland.hpp

@@ -158,11 +158,11 @@ namespace ESM4
         {
             return mMinHeight;
         }
-        float getMaxHeight() const
+        float getMaxHeight() const override
         {
             return mMaxHeight;
         }
-        int getLandSize() const
+        int getLandSize() const override
         {
             return VERTS_PER_SIDE;
         }