um/sysrq: remove needless variable sp
`sp' is a needless excercise here. Signed-off-by: Dmitry Safonov <dima@arista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Link: http://lkml.kernel.org/r/20200418201944.482088-36-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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