Resolves: tdf#118919 crash on double click ole object

Change-Id: Id7b3df447db56f6f80d6255dabdcc7f6ab149e95
Reviewed-on: https://gerrit.libreoffice.org/57953
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

embeddedobj/source/msole/oleembed.cxx

@@ -663,7 +663,7 @@ namespace
 {
     bool lcl_CopyStream(const uno::Reference<io::XInputStream>& xIn, const uno::Reference<io::XOutputStream>& xOut, sal_Int32 nMaxCopy = SAL_MAX_INT32)
     {
-        if (nMaxCopy == 0)
+        if (nMaxCopy <= 0)
             return false;
 
         const sal_Int32 nChunkSize = 4096;