all: gofmt with Go 1.17 to add //go:build tags

Also fixes formatting in TestStacktraceErr.

Signed-off-by: Tobias Klauser <[email protected]>

Author: tklauser

fuzz.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build gofuzz
 // +build gofuzz
 
 package netaddr

stackerr_test.go

@@ -18,7 +18,7 @@ import (
 func TestStacktraceErr(t *testing.T) {
 	b := new(netaddr.IPSetBuilder)
 //line ipp.go:1
-	b.AddPrefix(netaddr.IPPrefixFrom(netaddr.IPv4(1,2,3,4), 33))
+	b.AddPrefix(netaddr.IPPrefixFrom(netaddr.IPv4(1, 2, 3, 4), 33))
 //line r.go:2
 	b.AddRange(netaddr.IPRange{})
 	_, err := b.IPSet()

tools/tools.go

@@ -1,3 +1,4 @@
+//go:build tools
 // +build tools
 
 package tools