all: run gofmt

Fixes #44980

Change-Id: Icef35319d1582d8367c8911e15d11b0224957327
GitHub-Last-Rev: 2113e97e83
GitHub-Pull-Request: golang/go#45005
Reviewed-on: https://go-review.googlesource.com/c/go/+/301632
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Josh Bleecher Snyder <josharian@gmail.com>

misc/cgo/testplugin/testdata/method2/main.go

@@ -15,7 +15,7 @@ import (
 
 var t p.T
 
-type I interface { M() }
+type I interface{ M() }
 
 func main() {
 	pl, err := plugin.Open("method2.so")

src/cmd/cover/testdata/toolexec.go

@@ -15,8 +15,8 @@
 package main
 
 import (
-	"os"
 	exec "internal/execabs"
+	"os"
 	"strings"
 )
 

src/cmd/go/testdata/addmod.go

@@ -22,10 +22,10 @@ import (
 	"bytes"
 	"flag"
 	"fmt"
+	exec "internal/execabs"
 	"io/fs"
 	"log"
 	"os"
-	exec "internal/execabs"
 	"path/filepath"
 	"strings"
 

src/cmd/link/internal/ld/elf.go

@@ -1538,7 +1538,6 @@ func (ctxt *Link) doelf() {
 		addgonote(ctxt, ".note.go.buildid", ELF_NOTE_GOBUILDID_TAG, []byte(*flagBuildid))
 	}
 
-
 	//type mipsGnuAttributes struct {
 	//	version uint8   // 'A'
 	//	length  uint32  // 15 including itself

src/cmd/link/internal/ld/testdata/deadcode/ifacemethod3.go

@@ -14,7 +14,7 @@ type S int
 
 func (s S) M() { println("S.M") }
 
-type I interface { M() }
+type I interface{ M() }
 
 type T float64