ofz: Use-of-uninitialized-value

Change-Id: Ic5f41e4f1f6b20a8cd8887807296f33adb48b728
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/128496
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

lotuswordpro/source/filter/lwpdrawobj.cxx

@@ -1481,7 +1481,8 @@ void LwpDrawBitmap::Read()
         pPicData += 30*sizeof(sal_uInt8);
     }
 
-    m_pStream->ReadBytes(pPicData, nDIBRemaining);
+    if (nDIBRemaining != m_pStream->ReadBytes(pPicData, nDIBRemaining))
+        throw BadRead();
 }
 
 OUString LwpDrawBitmap::RegisterStyle()