x86: coding style fixes in arch/x86/ia32/audit.c

Fix one error reported by checkpatch,
it now reports:

total: 0 errors, 0 warnings, 42 lines checked

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>