Use Array.Resize in data storages

[petarpetrovt]

The new code is a bit shorter and performs better if SetCapacity is called multiple times with the same value (doesn't perform an allocation and copy if same size).

[ghost]

Tagging subscribers to this area: @roji, @ajcvickers
See info in area-owners.md if you want to be subscribed.

Issue Details

---

The new code is a bit shorter and performs better if SetCapacity is called multiple times with the same value (dosen't perform an allocation and copy if same size).

Author:	petarpetrovt
Assignees:	-
Labels:	area-System.Data
Milestone:	-

[roji]

Thanks @petarpetrovt!