Use proper constructor to fill with system time.

Probably 86adb5ca did not mean to change
the behaviour here.

Change-Id: If39c150973c502323b3c785a9738cf65cdd74e5d

sfx2/source/doc/objxtor.cxx

@@ -209,7 +209,7 @@ SfxObjectShell_Impl::SfxObjectShell_Impl( SfxObjectShell& _rDocShell )
     ,rDocShell( _rDocShell )
     ,aMacroMode( *this )
     ,pProgress( 0)
-    ,nTime( DateTime::EMPTY )
+    ,nTime( DateTime::SYSTEM )
     ,nVisualDocumentNumber( USHRT_MAX)
     ,nDocumentSignatureState( SIGNATURESTATE_UNKNOWN )
     ,nScriptingSignatureState( SIGNATURESTATE_UNKNOWN )