Issue with Example CloudSimDisksExample.java

[Astabol]

Error Message:
@Astabol ➜ /workspaces/cloudsim (master) $ /usr/bin/env /usr/local/sdkman/candidates/java/21.0.7-ms/bin/java @/tmp/cp_21uxbzezaxnt3b82qj5rneddz.argfile org.cloudbus.cloudsim.examples.EX.CloudSimDisksExample
Rediricting output to /workspaces/cloudsim/customlog.log
Exception in thread "main" java.lang.NullPointerException: Cannot invoke "org.cloudbus.cloudsim.EX.disk.HddHost.getGuestScheduler()" because the return value of "org.cloudbus.cloudsim.EX.disk.HddVm.getHost()" is null
at org.cloudbus.cloudsim.EX.disk.HddVm.getCurrentRequestedMips(HddVm.java:199)
at org.cloudbus.cloudsim.core.GuestEntity.getCurrentRequestedMaxMips(GuestEntity.java:57)
at org.cloudbus.cloudsim.core.HostEntity.isSuitableForGuest(HostEntity.java:405)
at org.cloudbus.cloudsim.VmAllocationWithSelectionPolicy.findHostForGuest(VmAllocationWithSelectionPolicy.java:41)
at org.cloudbus.cloudsim.VmAllocationPolicy.allocateHostForGuest(VmAllocationPolicy.java:82)
at org.cloudbus.cloudsim.EX.DatacenterEX.processVmCreate(DatacenterEX.java:56)
at org.cloudbus.cloudsim.Datacenter.processEvent(Datacenter.java:194)
at org.cloudbus.cloudsim.core.SimEntity.run(SimEntity.java:453)
at org.cloudbus.cloudsim.core.CloudSim.runClockTick(CloudSim.java:500)
at org.cloudbus.cloudsim.core.CloudSim.run(CloudSim.java:751)
at org.cloudbus.cloudsim.core.CloudSim.startSimulation(CloudSim.java:182)
at org.cloudbus.cloudsim.examples.EX.CloudSimDisksExample.main(CloudSimDisksExample.java:137)

[Astabol]

With this PR #214, It is fixed.