Handle zero file sizes in the Copy progress dialog

Division by zero...

1 files changed, 6 insertions, 3 deletions

diff --git a/UCoreWorkers.pas b/UCoreWorkers.pas
index 70ac89f..8c35c49 100644
--- a/UCoreWorkers.pas
+++ b/UCoreWorkers.pas
@@ -1004,9 +1004,12 @@ end;
             FCopyErrorHandledInProgress := not Result;
           end else begin
             //  Progress update
-            if BytesDone = 0 then UpdateProgress1(0, '0%')
-                             else UpdateProgress1(BytesDone, Format('%d%%', [Round(BytesDone / FFileSize * 100)]));
-            UpdateProgress2(FTotalDone + BytesDone, Format('%d%%', [Round((FTotalDone + BytesDone) / FTotalSize * 100)]));
+            if (BytesDone = 0) or (FFileSize = 0)
+              then UpdateProgress1(0, '0%')
+              else UpdateProgress1(BytesDone, Format('%d%%', [Round(BytesDone / FFileSize * 100)]));
+            if FTotalSize = 0
+              then UpdateProgress2(0, '0%')
+              else UpdateProgress2(FTotalDone + BytesDone, Format('%d%%', [Round((FTotalDone + BytesDone) / FTotalSize * 100)]));
             CommitGUIUpdate;
           end;
         end else DebugMsg(['*** CopyFilesWorker: Sender is not TWorkerThread']);