simplify loop

uncrust.go

@@ -70,11 +70,8 @@ func main() {
 	// We have to calculate the rune position from the byte position.
 	rcount := 0
 	idx := 0
-	cont := false
 	for p := range before {
-		cont = false
 		for i := range edits[idx:] {
-			cont = true
 			if edits[i].Start == p {
 				edits[i].Start = rcount
 			}
@@ -84,7 +81,7 @@ func main() {
 			}
 		}
 		rcount++
-		if !cont {
+		if idx == len(edits) {
 			break
 		}
 	}