Add missing break statement

Refs #6439 comment <#6439 (comment)>

Author: rom1v

server/src/main/java/com/genymobile/scrcpy/Options.java

@@ -414,6 +414,7 @@ public static Options parse(String... args) {
                     if (!value.isEmpty()) {
                         options.audioEncoder = value;
                     }
+                    break;
                 case "power_off_on_close":
                     options.powerOffScreenOnClose = Boolean.parseBoolean(value);
                     break;