staging: wilc1000: merge 'if' statements that test the same condition

Merge the instructions of two 'if' statements that test the same
condition and move a 'memcpy' instruction related to a different variable.
Issue found with coccicheck.

Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>