perf tools: Fix lsdir to set errno correctly
Fix lsdir() to set correct positive error number (ENOMEM). Since "errno" must have a positive error number instead of negative number, fix lsdir to set it correctly. Signed-off-by: NMasami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: e1ce726e ("perf tools: Add lsdir() helper to read a directory") Link: http://lkml.kernel.org/r/20160511135127.23943.40644.stgit@devboxSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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