runtime/testdata: gofmt

Change-Id: I728d4c709c4122fe4b96e1350be73696ac6fb1f7
Reviewed-on: https://go-review.googlesource.com/18422Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/runtime/testdata/testprog/main.go

@@ -23,7 +23,7 @@ func registerInit(name string, f func()) {
 
 func main() {
 	if len(os.Args) < 2 {
-		println("usage: "+os.Args[0]+" name-of-test")
+		println("usage: " + os.Args[0] + " name-of-test")
 		return
 	}
 	f := cmds[os.Args[1]]

src/runtime/testdata/testprogcgo/main.go

@@ -23,7 +23,7 @@ func registerInit(name string, f func()) {
 
 func main() {
 	if len(os.Args) < 2 {
-		println("usage: "+os.Args[0]+" name-of-test")
+		println("usage: " + os.Args[0] + " name-of-test")
 		return
 	}
 	f := cmds[os.Args[1]]

src/runtime/testdata/testprognet/main.go

@@ -23,7 +23,7 @@ func registerInit(name string, f func()) {
 
 func main() {
 	if len(os.Args) < 2 {
-		println("usage: "+os.Args[0]+" name-of-test")
+		println("usage: " + os.Args[0] + " name-of-test")
 		return
 	}
 	f := cmds[os.Args[1]]