PARQUET-888: Add missing virtual dtor.
PARQUET-888: Add missing virtual dtor.

Author: Thomas Sanchez <thomas.sanchz@gmail.com>

Closes #256 from daedric/PARQUET-888 and squashes the following commits:

481dd6b [Thomas Sanchez] PARQUET-888: Add missing virtual dtor.

Change-Id: I950d51ebe27fd175b13898a94a9b7c1ef16c4383

xhochy/arrow,itaiin/arrow,pcmoritz/arrow,kou/arrow,pcmoritz/arrow,xhochy/arrow,itaiin/arrow,renesugar/arrow,renesugar/arrow,tebeka/arrow,apache/arrow,wesm/arrow,tebeka/arrow,renesugar/arrow,majetideepak/arrow,icexelloss/arrow,majetideepak/arrow,icexelloss/arrow,kou/arrow,laurentgo/arrow,renesugar/arrow,icexelloss/arrow,icexelloss/arrow,cpcloud/arrow,renesugar/arrow,pcmoritz/arrow,apache/arrow,kou/arrow,cpcloud/arrow,tebeka/arrow,xhochy/arrow,icexelloss/arrow,laurentgo/arrow,xhochy/arrow,wesm/arrow,wesm/arrow,pcmoritz/arrow,xhochy/arrow,cpcloud/arrow,laurentgo/arrow,majetideepak/arrow,xhochy/arrow,icexelloss/arrow,renesugar/arrow,kou/arrow,itaiin/arrow,apache/arrow,majetideepak/arrow,xhochy/arrow,majetideepak/arrow,majetideepak/arrow,renesugar/arrow,wesm/arrow,apache/arrow,apache/arrow,pcmoritz/arrow,pcmoritz/arrow,icexelloss/arrow,cpcloud/arrow,icexelloss/arrow,pcmoritz/arrow,itaiin/arrow,itaiin/arrow,icexelloss/arrow,icexelloss/arrow,cpcloud/arrow,apache/arrow,icexelloss/arrow,pcmoritz/arrow,renesugar/arrow,cpcloud/arrow,renesugar/arrow,kou/arrow,majetideepak/arrow,apache/arrow,cpcloud/arrow,wesm/arrow,apache/arrow,majetideepak/arrow,xhochy/arrow,xhochy/arrow,itaiin/arrow,kou/arrow,laurentgo/arrow,kou/arrow,pcmoritz/arrow,wesm/arrow,renesugar/arrow,tebeka/arrow,majetideepak/arrow,cpcloud/arrow,xhochy/arrow,cpcloud/arrow,laurentgo/arrow,icexelloss/arrow,renesugar/arrow,wesm/arrow,apache/arrow,itaiin/arrow,majetideepak/arrow,majetideepak/arrow,kou/arrow,cpcloud/arrow,icexelloss/arrow,laurentgo/arrow,laurentgo/arrow,cpcloud/arrow,laurentgo/arrow,cpcloud/arrow,pcmoritz/arrow,tebeka/arrow,apache/arrow,majetideepak/arrow,tebeka/arrow,icexelloss/arrow,tebeka/arrow,pcmoritz/arrow,renesugar/arrow,xhochy/arrow,laurentgo/arrow,itaiin/arrow,cpcloud/arrow,majetideepak/arrow,apache/arrow,pcmoritz/arrow,wesm/arrow,renesugar/arrow,xhochy/arrow,itaiin/arrow,itaiin/arrow,kou/arrow,apache/arrow,pcmoritz/arrow,laurentgo/arrow,laurentgo/arrow,itaiin/arrow,laurentgo/arrow,itaiin/arrow,wesm/arrow,xhochy/arrow,tebeka/arrow,pcmoritz/arrow,wesm/arrow,laurentgo/arrow,cpcloud/arrow,kou/arrow,tebeka/arrow,apache/arrow,wesm/arrow,kou/arrow,majetideepak/arrow,apache/arrow,wesm/arrow,laurentgo/arrow,kou/arrow,renesugar/arrow,renesugar/arrow,majetideepak/arrow,itaiin/arrow,xhochy/arrow,kou/arrow,kou/arrow,xhochy/arrow,pcmoritz/arrow,tebeka/arrow,wesm/arrow,itaiin/arrow,wesm/arrow,laurentgo/arrow,itaiin/arrow