Fixed a NullPointerException in VirtualMachineImpl (Azure#24154)

Fabio1988 · web-flow · commit 75878374370f · 2021-09-16T10:44:50.000+08:00
NPE occurs when requesting osUnmanagedDiskVhdUri() but no VHD is present in the VirtualMachine.
diff --git a/sdk/resourcemanager/azure-resourcemanager-compute/src/main/java/com/azure/resourcemanager/compute/implementation/VirtualMachineImpl.java b/sdk/resourcemanager/azure-resourcemanager-compute/src/main/java/com/azure/resourcemanager/compute/implementation/VirtualMachineImpl.java
@@ -1480,7 +1480,7 @@ public OperatingSystemTypes osType() {
 
     @Override
     public String osUnmanagedDiskVhdUri() {
-        if (isManagedDiskEnabled()) {
+        if (isManagedDiskEnabled() || this.storageProfile().osDisk().vhd() == null) {
             return null;
         }
         return innerModel().storageProfile().osDisk().vhd().uri();

Original file line number	Diff line number	Diff line change
`@@ -1480,7 +1480,7 @@ public OperatingSystemTypes osType() {`
`1480`	`1480`
`1481`	`1481`	`@Override`
`1482`	`1482`	`public String osUnmanagedDiskVhdUri() {`
`1483`		`- if (isManagedDiskEnabled()) {`
	`1483`	`+ if (isManagedDiskEnabled() \|\| this.storageProfile().osDisk().vhd() == null) {`
`1484`	`1484`	`return null;`
`1485`	`1485`	`}`
`1486`	`1486`	`return innerModel().storageProfile().osDisk().vhd().uri();`