gofmt: do not stop test.sh after 1 error

Fix bug377.go to be gofmt-compliant.

R=gri, r, r
CC=golang-dev
https://golang.org/cl/5400045
diff --git a/test/fixedbugs/bug377.go b/test/fixedbugs/bug377.go
index b6b5509..e905e34 100644
--- a/test/fixedbugs/bug377.go
+++ b/test/fixedbugs/bug377.go
@@ -6,4 +6,4 @@
 
 // Issue 1802
 
-ignored
+package ignored