memstick: mspro_block: remove unneeded semicolon

A semicolon is not needed after a switch statement.

Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20201031134818.2135446-1-trix@redhat.com


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>