fix cleaning up of symbol table levels
fix cleaning up of symbol table levels

riginding/dora,dinfuehr/dora,dinfuehr/dora,riginding/dora,dinfuehr/dora,riginding/dora,dinfuehr/dora,riginding/dora,dinfuehr/dora,riginding/dora,dinfuehr/dora,riginding/dora,riginding/dora