fdo#76260 - don't allocate and free std::strings on each element.

This debug code is quite expensive; 2.5% of document load time;
Avoid the pointless heap allocation, and punt the rest to fdo#80798.

Change-Id: I499b3cf48867d5ed0f2b33b9d12f1c128c993aae

writerfilter/source/ooxml/OOXMLPropertySetImpl.cxx

@@ -402,8 +402,9 @@ bool OOXMLPropertySetImplCompare::operator()(const OOXMLProperty::Pointer_t x,
 */
 
 OOXMLPropertySetImpl::OOXMLPropertySetImpl()
-: msType("OOXMLPropertySetImpl")
 {
+    static OString aName("OOXMLPropertySetImpl");
+    maType = aName;
 }
 
 OOXMLPropertySetImpl::~OOXMLPropertySetImpl()
@@ -449,7 +450,7 @@ OOXMLPropertySetImpl::end() const
 
 string OOXMLPropertySetImpl::getType() const
 {
-    return msType;
+    return string(maType.getStr());
 }
 
 void OOXMLPropertySetImpl::add(OOXMLProperty::Pointer_t pProperty)
@@ -497,7 +498,7 @@ OOXMLPropertySet * OOXMLPropertySetImpl::clone() const
 
 void OOXMLPropertySetImpl::setType(const string & rsType)
 {
-    msType = rsType;
+    maType = OString(rsType.c_str(), rsType.size());
 }
 
 #ifdef DEBUG_DOMAINMAPPER

writerfilter/source/ooxml/OOXMLPropertySetImpl.hxx

@@ -164,7 +164,7 @@ public:
     typedef std::vector<OOXMLProperty::Pointer_t> OOXMLProperties_t;
 private:
     OOXMLProperties_t mProperties;
-    std::string msType;
+    OString maType;
 public:
     OOXMLPropertySetImpl();
     virtual ~OOXMLPropertySetImpl();