Merge pull request #4946 from blueyed/fix-bench

Fix bench/bench.py without args

Author: nicoddemus

bench/bench.py

@@ -5,7 +5,7 @@
     import pytest  # NOQA
     import pstats
 
-    script = sys.argv[1:] if len(sys.argv) > 1 else "empty.py"
+    script = sys.argv[1:] if len(sys.argv) > 1 else ["empty.py"]
     stats = cProfile.run("pytest.cmdline.main(%r)" % script, "prof")
     p = pstats.Stats("prof")
     p.strip_dirs()