blockchain/validate.go

@@ -224,10 +224,7 @@ func withinLevelBounds(reduction int64, lv int64) bool {
 		return false
 	}
 	reduction++
-	if ((reduction*reduction + reduction) >> 1) <= lv {
-		return false
-	}
-	return true
+	return ((reduction*reduction + reduction) >> 1) > lv
 }
 
 // CheckTransactionSanity performs some preliminary checks on a transaction to

btcec/genprecomps.go

@@ -5,6 +5,7 @@
 // This file is ignored during the regular build due to the following build tag.
 // It is called by go generate and used to automatically generate pre-computed
 // tables used to accelerate operations.
+//go:build ignore
 // +build ignore
 
 package main

btcec/gensecp256k1.go

@@ -4,6 +4,7 @@
 
 // This file is ignored during the regular build due to the following build tag.
 // This build tag is set during go generate.
+//go:build gensecp256k1
 // +build gensecp256k1
 
 package btcec

btcec/precompute.go

@@ -12,7 +12,7 @@ import (
 	"strings"
 )
 
-//go:generate go run -tags gensecp256k1 genprecomps.go
+//go:rm -f gensecp256k1.go; generate go run -tags gensecp256k1 genprecomps.go
 
 // loadS256BytePoints decompresses and deserializes the pre-computed byte points
 // used to accelerate scalar base multiplication for the secp256k1 curve.  This

limits/limits_unix.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
+//go:build !windows && !plan9
 // +build !windows,!plan9
 
 package limits

rpcclient/infrastructure.go

@@ -803,6 +803,7 @@ func (c *Client) handleSendPostMessage(jReq *jsonRequest) {
 			time.Sleep(backoff)
 			continue
 		}
+		defer httpResponse.Body.Close()
 		break
 	}
 	if err != nil {
@@ -810,9 +811,8 @@ func (c *Client) handleSendPostMessage(jReq *jsonRequest) {
 		return
 	}
 
-	// Read the raw bytes and close the response.
+	// Read the raw bytes from the response.
 	respBytes, err := ioutil.ReadAll(httpResponse.Body)
-	httpResponse.Body.Close()
 	if err != nil {
 		err = fmt.Errorf("error reading json reply: %v", err)
 		jReq.responseChan <- &Response{err: err}
@@ -1381,6 +1381,7 @@ func dial(config *ConnConfig) (*websocket.Conn, error) {
 		// cases above apply.
 		return nil, errors.New(resp.Status)
 	}
+	resp.Body.Close()
 	return wsConn, nil
 }
 

signalsigterm.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
+//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
 // +build darwin dragonfly freebsd linux netbsd openbsd solaris
 
 package main

upnp.go

@@ -136,7 +136,7 @@ func Discover() (nat NAT, err error) {
 		return
 	}
 	err = errors.New("UPnP port discovery failed")
-	return
+	return nat, err
 }
 
 // service represents the Service type in an UPnP xml description.
@@ -269,7 +269,7 @@ func getServiceURL(rootURL string) (url string, err error) {
 		return
 	}
 	url = combineURL(rootURL, d.ControlURL)
-	return
+	return url, err
 }
 
 // combineURL appends subURL onto rootURL.