Fix a bug that failed to handle the last non-arg data.
Fix a bug that failed to handle the last non-arg data.

When a data entry that has no arguments such as T or F at the end of the
given arguments sequence, oscsend incorrectly required an argument.

johne53/MB3Liblo,johne53/MB3Liblo,island-org/liblo,fsateler/liblo,radarsat1/liblo,johne53/MB3Liblo,kneitinger/liblo,fsateler/liblo,kneitinger/liblo,fsateler/liblo,kneitinger/liblo,tuscland/liblo,radarsat1/liblo,island-org/liblo,tuscland/liblo,johne53/MB3Liblo,umlaeute/liblo,radarsat1/liblo,tuscland/liblo,umlaeute/liblo,umlaeute/liblo,island-org/liblo