1 files changed, 7 insertions, 3 deletions
diff --git a/CPP/7zip/Archive/XzHandler.cpp b/CPP/7zip/Archive/XzHandler.cpp
index ada14fbf..11f4b444 100644
--- a/CPP/7zip/Archive/XzHandler.cpp
+++ b/CPP/7zip/Archive/XzHandler.cpp
@@ -351,7 +351,8 @@ struct COpenCallbackWrap
 static SRes OpenCallbackProgress(void *pp, UInt64 inSize, UInt64 /* outSize */)
 {
   COpenCallbackWrap *p = (COpenCallbackWrap *)pp;
-  p->Res = p->OpenCallback->SetCompleted(NULL, &inSize);
+  if (p->OpenCallback)
+    p->Res = p->OpenCallback->SetCompleted(NULL, &inSize);
   return (SRes)p->Res;
 }
 
@@ -414,7 +415,10 @@ HRESULT CHandler::Open2(IInStream *inStream, /* UInt32 flags, */ IArchiveOpenCal
   }
 
   RINOK(inStream->Seek(0, STREAM_SEEK_END, &_stat.PhySize));
-  RINOK(callback->SetTotal(NULL, &_stat.PhySize));
+  if (callback)
+  {
+    RINOK(callback->SetTotal(NULL, &_stat.PhySize));
+  }
 
   CSeekInStreamWrap inStreamImp(inStream);
 
@@ -466,7 +470,7 @@ STDMETHODIMP CHandler::Open(IInStream *inStream, const UInt64 *, IArchiveOpenCal
   COM_TRY_BEGIN
   {
     Close();
-    return Open2(inStream, /* 0, */ callback);
+    return Open2(inStream, callback);
   }
   COM_TRY_END
 }