nodemask: fix the declaration of NODEMASK_ALLOC()

we can't declarate two variable at the same scope by NODEMASK_ALLOC().

This patch fixes it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Paul Menage <menage@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/nodemask.h

@@ -483,7 +483,7 @@ static inline int num_node_state(enum node_states state)
 			type *name = kmalloc(sizeof(*name), gfp_flags)
 #define NODEMASK_FREE(m)			kfree(m)
 #else
-#define NODEMASK_ALLOC(type, name, gfp_flags)	type _name, *name = &_name
+#define NODEMASK_ALLOC(type, name, gfp_flags)	type _##name, *name = &_##name
 #define NODEMASK_FREE(m)			do {} while (0)
 #endif