Update test/cmdlineargs.jl

Author: giordano

test/cmdlineargs.jl

@@ -158,7 +158,7 @@ let exename = `$(Base.julia_cmd()) --startup-file=no --color=no`
         # @which is undefined
         @test_broken v == ("false\nREPL: InteractiveUtilstrue\n", true)
         stderr = String(take!(io))
-        @test_broken !contains(stderr, "UndefVarError")
+        @test_broken isempty(stderr)
     end
     let v = writereadpipeline("println(\"REPL: \", InteractiveUtils)",
                 setenv(`$exename -i -e 'const InteractiveUtils = 3'`,