fix: lint issues in matched pool

filter/bench_test.go

@@ -96,7 +96,7 @@ func BenchmarkRegexpFilterMultiCycle(b *testing.B) {
 	b.ResetTimer()
 	for b.Loop() {
 		// Simulate 3 keystroke cycles
-		for cycle := 0; cycle < 3; cycle++ {
+		for range 3 {
 			ctx := f.NewContext(context.Background(), query)
 			ch := make(chan line.Line, numLines)
 			_ = f.Apply(ctx, lines, pipeline.ChanOutput(ch))

line/matched.go

@@ -12,7 +12,10 @@ var matchedPool = sync.Pool{
 
 // GetMatched retrieves a Matched from the pool and initializes it.
 func GetMatched(rl Line, matches [][]int) *Matched {
-	m := matchedPool.Get().(*Matched)
+	m, ok := matchedPool.Get().(*Matched)
+	if !ok {
+		m = &Matched{}
+	}
 	m.Line = rl
 	m.indices = matches
 	return m