irda: w83977af_ir: Neaten pointer comparisons
Convert pointer comparisons to NULL. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert pointer comparisons to NULL. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>