[PATCH 0/6] Fix file descriptor leak on user-space processes and cleanup

[Andrà Goddard Rosa]

Fix a file descriptor leak on user-space processes and perform a cleanup,
reducing the code size:
text    data     bss     dec     hex filename
9949      72      16   10037    2735 ipc/mqueue-BEFORE.o
9885      72      16    9973    26f5 ipc/mqueue-AFTER.o

Andrà Goddard Rosa (6):
  mqueue: remove unneeded info->messages initialization
  mqueue: apply mathematics distributivity on mq_bytes calculation
  mqueue: simplify do_open() error handling
  mqueue: only set error codes if they are really necessary
  mqueue: fix typo "failues" -> "failures"
  mqueue: fix mq_open() file descriptor leak on user-space processes

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