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>

arch/x86/ia32/audit.c

@@ -27,7 +27,7 @@ unsigned ia32_signal_class[] = {
 
 int ia32_classify_syscall(unsigned syscall)
 {
-	switch(syscall) {
+	switch (syscall) {
 	case __NR_open:
 		return 2;
 	case __NR_openat: