reader: fix uninitialized variables. Should correct #32.
reader: fix uninitialized variables. Should correct #32.

mvertes/node-parquet,mvertes/node-parquet,mvertes/node-parquet,mvertes/node-parquet,skale-me/node-parquet,skale-me/node-parquet,skale-me/node-parquet,skale-me/node-parquet