[PATCH] jbd: avoid kfree(NULL)
There are a couple of places where JBD has to check to see whether an unneeded memory allocation was performed. Usually it _was_ needed, so we end up calling kfree(NULL). We can micro-optimise that by checking the pointer before calling kfree(). Thanks to Steven Rostedt <rostedt@goodmis.org> for identifying this. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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