flag: remove extra space in error message

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://golang.org/cl/86420046

diff --git a/src/pkg/flag/flag.go b/src/pkg/flag/flag.go
index d3b454fefd4e814e185364842f38cfa6c395a997..764ed7c8f59e03752e8ad0c5512036976a2c2c5c 100644 (file)
--- a/src/pkg/flag/flag.go
+++ b/src/pkg/flag/flag.go
@@ -754,7 +754,7 @@ func (f *FlagSet) parseOne() (bool, error) {
        if fv, ok := flag.Value.(boolFlag); ok && fv.IsBoolFlag() { // special case: doesn't need an arg
                if has_value {
                        if err := fv.Set(value); err != nil {
-                               return false, f.failf("invalid boolean value %q for  -%s: %v", value, name, err)
+                               return false, f.failf("invalid boolean value %q for -%s: %v", value, name, err)
                        }
                } else {
                        fv.Set("true")