go/scanner: fix minor typo

R=r
CC=golang-dev
https://golang.org/cl/6442076

diff --git a/src/pkg/go/scanner/scanner.go b/src/pkg/go/scanner/scanner.go
index eee1f387a86b65cf748bc4ed357f495aa63877e7..bb1dba0eb08f01a4df240a9d40e5b13e6d6f481b 100644 (file)
--- a/src/pkg/go/scanner/scanner.go
+++ b/src/pkg/go/scanner/scanner.go
@@ -81,7 +81,7 @@ func (s *Scanner) next() {
        }
 }
 
-// A mode value is set of flags (or 0).
+// A mode value is a set of flags (or 0).
 // They control scanner behavior.
 //
 type Mode uint