fdo#75757: remove inheritance to std::vector

Change-Id: I621286f0b64ff464bc29310ba79e416abc5791d8
Reviewed-on: https://gerrit.libreoffice.org/11042Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>

sfx2/source/appl/appdde.cxx

@@ -229,8 +229,6 @@ public:
 };
 
 
-class SfxDdeDocTopics_Impl : public std::vector<SfxDdeDocTopic_Impl*> {};
-
 #if defined( WNT )
 
 namespace {

sfx2/source/inc/appdata.hxx

@@ -33,7 +33,7 @@
 
 class SfxApplication;
 class SfxProgress;
-class SfxDdeDocTopics_Impl;
+class SfxDdeDocTopic_Impl;
 class DdeService;
 class SfxItemPool;
 class SfxFilterMatcher;
@@ -63,6 +63,8 @@ namespace sfx2 {
 
 typedef Link* LinkPtr;
 
+typedef std::vector<SfxDdeDocTopic_Impl*> SfxDdeDocTopics_Impl;
+
 class SfxAppData_Impl
 {
 public: