lib: bitmap: simplify bitmap_parselist
We want len to be the index of the first '\n', or the length of the
string if there is no newline. This is a good example of the usefulness
of strchrnul(). Use that instead, thus eliminating a branch and a call
to strlen().
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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