Update poll request when 4 byte data type is selected. #4
Description
When polling registers, if a data type of size 4 bytes is selected, but the register length is an odd number, the data is truncated and the last half value is not displayed.
This can be confusing when 1 register is selected as the length, as no data will be displayed at all when the program reports a successful poll.
Either a console message should be made, or the poll request should be updated such that the length of the poll is rounded up to the nearest even number. It should also be reflected in the numberOfRegistersComboBox.