kmemleak: fix sparse warning over overshadowed flags
A secondary irq_save is not required as a locking before it was already disabling irqs. This fixes this sparse warning: mm/kmemleak.c:512:31: warning: symbol 'flags' shadows an earlier one mm/kmemleak.c:448:23: originally declared here Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com> Acked-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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