Running "go fmt" on printer_test.go breaks the tests.

[Manoj Dayaram]

After running "go fmt" on printer_test.go, I got the following errors when running the tests:

----------------------------------------------------------------------
FAIL: printer_test.go:84: PrinterS.TestPrintLine

printer_test.go:88:
    c.Assert(output, Equals, test.output)
... obtained string = "" +
... "case 6:\n" +
... " ... // Comment6\n" +
... " println(7)"
... expected string = "" +
... "case 6:\n" +
... " println(6) // Comment6\n" +
... " ..."

OOPS: 123 passed, 1 FAILED
--- FAIL: Test (0.16 seconds)
FAIL
FAIL gocheck 0.180s