WaE: variable 'res' set but not used

Change-Id: I3fc3f55d10dad177451100affacfff74d04a1fe8

sw/source/ui/envelp/labelcfg.cxx

@@ -38,6 +38,7 @@ static inline void lcl_assertEndingItem(xmlreader::XmlReader& reader)
     xmlreader::XmlReader::Result res;
     res = reader.nextItem(xmlreader::XmlReader::TEXT_NONE, &name, &nsId);
     assert(res == xmlreader::XmlReader::RESULT_END);
+    (void) res;
 }
 
 static inline OUString lcl_getValue(xmlreader::XmlReader& reader,