Clang's static analyzer complained that we could use after free here if
the inner loop ever iterated. That is a false positive, but upon
inspection, the userland abd_alloc_chunks() function never will put
multiple consecutive pages into a `struct scatterlist`, so there is no
need to loop. We delete the inner loop.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes#14042
9a8039439a