Heightmap is properly generated after loading chunks now, so /spawn and /top should work properly again

git-svn-id: http://mc-server.googlecode.com/svn/trunk@274 0a769ca7-a7f5-676a-18bf-c427514a06d6

source/cChunk.cpp

@@ -238,6 +238,8 @@ void cChunk::SetAllData(const char * a_BlockData, cEntityList & a_Entities, cBlo
 	
 	// Create block entities that the loader didn't load; fill them with defaults
 	CreateBlockEntities();
+
+	CalculateHeightmap();
 }