ipc: fix printing of nsops argument of semop and semtimedop syscalls
ipc: fix printing of nsops argument of semop and semtimedop syscalls

According to POSIX, nsops argument of semop syscall has type size_t,
but the kernel treats nsops argument of semop and semtimedop syscalls
as unsigned int.

* ipc_sem.c (tprint_sembuf_array): Change type of "count" argument
from unsigned long to unsigned int, print it using %u format.

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