lib/decompress_unlzma: Do a NULL check for pointer
Compare pointer-typed values to NULL rather than 0. The semantic patch that makes this change is available in scripts/coccinelle/null/badzero.cocci. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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