OvmfPkg: Change complex DEBUG_CODE() to DEBUG_CODE_BEGIN/END()

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3767

Update use of DEBUG_CODE(Expression) if Expression is a complex code
block with if/while/for/case statements that use {}.

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Andrew Fish <afish@apple.com>

OvmfPkg/PciHotPlugInitDxe/PciHotPlugInit.c

@@ -564,7 +564,7 @@ GetResourcePadding (
 
   Address = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS *)&HpcPciAddress;
 
-  DEBUG_CODE (
+  DEBUG_CODE_BEGIN ();
     CHAR16                                      *DevicePathString;
 
     DevicePathString = ConvertDevicePathToText (HpcDevicePath, FALSE, FALSE);
@@ -576,7 +576,7 @@ GetResourcePadding (
     if (DevicePathString != NULL) {
       FreePool (DevicePathString);
     }
-    );
+  DEBUG_CODE_END ();
 
   if (HpcState == NULL || Padding == NULL || Attributes == NULL) {
     return EFI_INVALID_PARAMETER;