go,lint: Update to go 1.22 and fix some lint warnings

.golangci.yml

@@ -6,7 +6,6 @@ linters:
         - errname
         - errorlint
         - exhaustive
-        - exportloopref
         - forcetypeassert
         - goimports
         - gosec
@@ -25,6 +24,7 @@ linters:
         - wastedassign
         - staticcheck
         - govet
+        - copyloopvar
 
 linters-settings:
     revive:
@@ -54,11 +54,13 @@ linters-settings:
     staticcheck:
         checks: ["all"]
 
-run:
-    timeout: 5m
-    skip-dirs:
+issues:
+    exclude-dirs:
         # allow md5
         - dev
         - doc
         # ignore warnings in code from crypto/tls and zmap/zcrypto
         - format/tls/tlsdecrypt
+
+run:
+    timeout: 5m

README.md

@@ -244,7 +244,7 @@ apk add -X http://dl-cdn.alpinelinux.org/alpine/edge/testing fq
 
 ### Build from source
 
-Make sure you have [go](https://go.dev) 1.21 or later installed.
+Make sure you have [go](https://go.dev) 1.22 or later installed.
 
 To install directly from git repository (no git clone needed):
 ```sh

go.mod

@@ -1,6 +1,6 @@
 module github.com/wader/fq
 
-go 1.21
+go 1.22
 
 // fork of github.com/itchyny/gojq, see github.com/wader/gojq fq branch
 require github.com/wader/gojq v0.12.1-0.20240822064856-a7688e3344e7

pkg/bitio/readwrite64_test.go

@@ -136,7 +136,6 @@ func TestWrite64(t *testing.T) {
 		{0b1, 1, []byte{0b0000_0000}, 7, []byte{0b0000_0001}},
 	}
 	for _, tC := range testCases {
-		tC := tC
 		t.Run(fmt.Sprintf("%d %d %s", tC.v, tC.nBits, hex.EncodeToString(tC.buf)), func(t *testing.T) {
 			bitio.Write64(tC.v, tC.nBits, tC.buf, tC.firstBit)
 			if !bytes.Equal(tC.expectedBuf, tC.buf) {