Merge branch 'terrain_patch_collision_fix' of https://github.com/GoaLitiuM/FlaxEngine into GoaLitiuM-terrain_patch_collision_fix

Source/Engine/Terrain/TerrainPatch.cpp

@@ -110,6 +110,8 @@ void TerrainPatch::Init(Terrain* terrain, int16 x, int16 z)
 
 TerrainPatch::~TerrainPatch()
 {
+    if (HasCollision())
+        DestroyCollision();
 #if TERRAIN_EDITING
     SAFE_DELETE(_dataHeightmap);
     for (int32 i = 0; i < TERRAIN_MAX_SPLATMAPS_COUNT; i++)
@@ -117,12 +119,6 @@ TerrainPatch::~TerrainPatch()
         SAFE_DELETE(_dataSplatmap[i]);
     }
 #endif
-#if TERRAIN_USE_PHYSICS_DEBUG
-    SAFE_DELETE_GPU_RESOURCE(_debugLines);
-#endif
-#if USE_EDITOR
-    SAFE_DELETE_GPU_RESOURCE(_collisionTrianglesBuffer);
-#endif
 }
 
 RawDataAsset* TerrainPatch::GetHeightfield() const