to avoid a memory leak. Found by: Chao Huang Patch by: Chao Huang, alg Review by: Chao Huang, alg (cherry picked from commit e7168710bfd30b5d682d21d81c116cd33cf22505) Conflicts: sc/source/filter/xml/xmlfonte.cxx Change-Id: I75475bb59b3a7040938826d095dcd81e19d61b46