require go >=1.22 but use >=1.24 toolchain

Require the lowest go version we can get away with, but use the 1.24 stdlib so we can use the new runtime.AddCleanup().

Author: bitbullet

go.mod

@@ -1,5 +1,11 @@
 module github.com/koonix/go-livereload
 
-go 1.24
+// Require 1.22+ to benefit from the for-loop changes.
+// https://tip.golang.org/doc/go1.22#language
+go 1.22
+
+// Use 1.24+ so we can use the runtime.AddCleanup function.
+// https://tip.golang.org/doc/go1.24#improved-finalizers
+toolchain go1.24.0
 
 require golang.org/x/net v0.35.0

livereload.go

@@ -204,7 +204,7 @@ func scriptNonceAttrs(h http.Header) []html.Attribute {
 // cspScriptNonce parses a "Content-Security-Policy" http header value
 // and extracts the script-src nonce value from it if available.
 func cspScriptNonce(csp string) string {
-for segment := range strings.SplitSeq(csp, ";") {
+for _, segment := range strings.Split(csp, ";") {
 fields := strings.Fields(segment)
 if len(fields) < 2 { // This also skips empty slices, preventing panic.
 continue