chore: use stdlib vars in code (#1793)

.golangci.yml

@@ -38,6 +38,7 @@ linters:
   disable-all: true
   enable:
     - bodyclose
+    - usestdlibvars
     - deadcode
     - depguard
     - dupl

cmd.go

@@ -416,7 +416,7 @@ func syncList(ctx context.Context, httpClient *http.Client, cmdArgs *parser.Argu
 	}
 
 	if config.Runtime.Mode.AtLeastAUR() && (len(cmdArgs.Targets) == 0 || aur) {
-		req, err := http.NewRequestWithContext(ctx, "GET", config.AURURL+"/packages.gz", http.NoBody)
+		req, err := http.NewRequestWithContext(ctx, http.MethodGet, config.AURURL+"/packages.gz", http.NoBody)
 		if err != nil {
 			return err
 		}

pkg/news/news.go

@@ -61,7 +61,7 @@ type rss struct {
 }
 
 func PrintNewsFeed(ctx context.Context, client *http.Client, cutOffDate time.Time, bottomUp, all, quiet bool) error {
-	req, err := http.NewRequestWithContext(ctx, "GET", "https://archlinux.org/feeds/news", http.NoBody)
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, "https://archlinux.org/feeds/news", http.NoBody)
 	if err != nil {
 		return err
 	}

pkg/query/source_test.go

@@ -82,7 +82,7 @@ type mockDoer struct{}
 
 func (m *mockDoer) Do(req *http.Request) (*http.Response, error) {
 	return &http.Response{
-		StatusCode: 200,
+		StatusCode: http.StatusOK,
 		Body:       io.NopCloser(bytes.NewBufferString(validPayload)),
 	}, nil
 }