- fine-tuning of one-line func heuristic (nodes.go)

- enabled for function declarations (not just function literals)
- applied gofmt -w $GOROOT/src
(look for instance at src/pkg/debug/elf/elf.go)

R=r, rsc
CC=go-dev
http://go/go-review/1026006

src/cmd/godoc/main.go

@@ -183,9 +183,7 @@ func main() {
 		// 1) set timestamp right away so that the indexer is kicked on
 		fsTree.set(nil);
 		// 2) compute initial directory tree in a goroutine so that launch is quick
-		go func() {
-			fsTree.set(newDirectory(".", maxDirDepth));
-		}();
+		go func() { fsTree.set(newDirectory(".", maxDirDepth)) }();
 
 		// Start sync goroutine, if enabled.
 		if *syncCmd != "" && *syncMin > 0 {