Fixes hard-coded widget border size - fixes theming issues
Fixes hard-coded widget border size - fixes theming issues

The ComboBox widget never asked the fpgStyle the size of the theme
border, and always assumed 2px, which was wrong. It now correctly
queries the fpgStyle (current theme) for the border sizes.

wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI