library: strengthen <pids> sort order parameter checks
The way that the passed sort order was validated would allow the invalid 0 to fall between the sofa cushions. So this patch will simply close that former oversight. Signed-off-by: Jim Warner <james.warner@comcast.net>
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@ -1389,7 +1389,7 @@ PROCPS_EXPORT struct pids_stack **procps_pids_stacks_sort (
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// a pids_item is currently unsigned, but we'll protect our future
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if (sort < 0 || sort > PROCPS_PIDS_noop)
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return NULL;
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if (order < -1 || order > +1)
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if (order != PROCPS_SORT_ASCEND && order != PROCPS_SORT_DESCEND)
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return NULL;
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if (numstacked < 2)
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return stacks;
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