trivial patches for 2014-08-15

# gpg: Signature made Fri 15 Aug 2014 16:13:03 BST using RSA key ID A4C3D7DB
# gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>"
# gpg:                 aka "Michael Tokarev <mjt@corpit.ru>"
# gpg:                 aka "Michael Tokarev <mjt@debian.org>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6EE1 95D1 886E 8FFB 810D  4324 457C E0A0 8044 65C5
#      Subkey fingerprint: 6F67 E18E 7C91 C5B1 5514  66A7 BEE5 9D74 A4C3 D7DB

* remotes/mjt/tags/trivial-patches-2014-08-15:
  ivshmem: check the value returned by fstat()
  l2cap: fix access to freed memory
  intc: i8259: Convert Array allocation to g_new0
  ppc: convert g_new(qemu_irq usages to g_new0
  ssi: xilinx_spi: Initialise CS GPIOs as NULL
  vl: free err
  qemu-options.hx: fix typo about l2tpv3
  vmxnet3: don't use 'Yoda conditions'
  vl: don't use 'Yoda conditions'
  spice: don't use 'Yoda conditions'
  don't use 'Yoda conditions'
  isa-bus: don't use 'Yoda conditions'
  audio: don't use 'Yoda conditions'
  usb: don't use 'Yoda conditions'
  CODING_STYLE: Section about conditional statement
  pci-host: update uncorresponding description
  pci-host: update obsolete reference about piix_pci.c
  qemu-options.hx: fix a typo of chardev
  memory: Update obsolete comment about AddrRange field type
  apic: Fix reported DFR content

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>