Remove a duplicated semi-colon
Remove a duplicated semi-colon

Found with the help of clang-format (from another branch)

OliverDDS/libmodbus,stephane/libmodbus,OliverDDS/libmodbus,stephane/libmodbus,marinbek/libmodbus,marinbek/libmodbus,OliverDDS/libmodbus,marinbek/libmodbus,stephane/libmodbus