refactor: use maps.Copy to simplify the code (#5321)

Signed-off-by: dulanting <[email protected]>

Author: dulanting

common/configtx/update.go

@@ -7,6 +7,7 @@ SPDX-License-Identifier: Apache-2.0
 package configtx
 
 import (
+	"maps"
 	"strings"
 
 	cb "github.com/hyperledger/fabric-protos-go-apiv2/common"
@@ -192,12 +193,8 @@ func (vi *ValidatorImpl) policyForItem(item comparable) (policies.Policy, bool)
 // computeUpdateResult takes a configMap generated by an update and produces a new configMap overlaying it onto the old config
 func (vi *ValidatorImpl) computeUpdateResult(updatedConfig map[string]comparable) map[string]comparable {
 	newConfigMap := make(map[string]comparable)
-	for key, value := range vi.configMap {
-		newConfigMap[key] = value
-	}
+	maps.Copy(newConfigMap, vi.configMap)
 
-	for key, value := range updatedConfig {
-		newConfigMap[key] = value
-	}
+	maps.Copy(newConfigMap, updatedConfig)
 	return newConfigMap
 }

core/ledger/kvledger/txmgmt/statedb/statecouchdb/couchdb.go

@@ -15,6 +15,7 @@ import (
 	"fmt"
 	"io"
 	"log"
+	"maps"
 	"mime"
 	"mime/multipart"
 	"net/http"
@@ -634,9 +635,7 @@ func createAttachmentPart(couchDoc *couchDoc) (bytes.Buffer, string, error) {
 		}
 
 		// add all key/values to the attachmentJSONMap
-		for jsonKey, jsonValue := range genericMap {
-			attachmentJSONMap[jsonKey] = jsonValue
-		}
+		maps.Copy(attachmentJSONMap, genericMap)
 
 	}