cpu_pda array to macro followup correction

From: Jan Beulich <jbeulich@novell.com>
Fix one place where the previous change of cpu_pda from being an array
to being a macro was not properly carried out.

Signed-Off-By: Jan Beulich <jbeulich@novell.com>

Signed-off-by: Andi Kleen <ak@suse.de>

 arch/x86_64/kernel/setup64.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

Index: linux/arch/x86_64/kernel/setup64.c
===================================================================
--- linux.orig/arch/x86_64/kernel/setup64.c
+++ linux/arch/x86_64/kernel/setup64.c
@@ -248,7 +248,7 @@ void __cpuinit cpu_init (void)
 		switch (v + 1) {
 #if DEBUG_STKSZ > EXCEPTION_STKSZ
 		case DEBUG_STACK:
-			cpu_pda[cpu].debugstack = (unsigned long)estacks;
+			cpu_pda(cpu)->debugstack = (unsigned long)estacks;
 			estacks += DEBUG_STKSZ;
 			break;
 #endif