fixed missing sorting in test-dumprevlog

The test failed at random because the order of files was non-deterministic,
which produced diffs in test output.

tests/test-dumprevlog

@@ -1,47 +1,47 b''
 #!/bin/sh
 
 CONTRIBDIR=$TESTDIR/../contrib
 
 mkdir repo-a
 cd repo-a
 hg init
 
 echo this is file a > a
 hg add a
 hg commit -m first -d '0 0'
 
 echo adding to file a >> a
 hg commit -m second -d '0 0'
 
 echo adding more to file a >> a
 hg commit -m third -d '0 0'
 
 hg verify
 
 echo dumping revlog of file a to stdout:
 python $CONTRIBDIR/dumprevlog .hg/store/data/a.i
 echo dumprevlog done
 
 # dump all revlogs to file repo.dump
-find .hg/store -name "*.i" | xargs python $CONTRIBDIR/dumprevlog > ../repo.dump
+find .hg/store -name "*.i" | sort | xargs python $CONTRIBDIR/dumprevlog > ../repo.dump
 
 cd ..
 
 mkdir repo-b
 cd repo-b
 hg init
 
 echo undumping:
 python $CONTRIBDIR/undumprevlog < ../repo.dump
 echo undumping done
 
 hg verify
 
 cd ..
 
 echo comparing repos:
 hg -R repo-b incoming repo-a
 hg -R repo-a incoming repo-b
 echo comparing done
 
 exit 0