Size test is destructive

[pogo555]

Expected Behavior

The memory should be left undisturbed after the constructor has checked its size.

Actual Behavior

The bytes at the bottom of the memory and the putative top of memory are overwritten during the size test. If the memory is battery backed, then data will be lost.

Steps to Reproduce the Problem

• Instantiate the class
• Read the data at the bottom and the several putative size boundaries. They will be 0xff, left over from the size check

Specifications

• Library Version: 1.0.6
• IDE Version: 1.8.15
• Platform: Arduino
• Subsystem:
• any other details needed to reproduce the problem