convert some plugins to LO_CLANG_SHARED_PLUGINS

Change-Id: I63c9e010d83c24e18a36164ceb0441e48b757142
Reviewed-on: https://gerrit.libreoffice.org/75725
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

compilerplugins/clang/ptrvector.cxx

@@ -6,6 +6,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
+#ifndef LO_CLANG_SHARED_PLUGINS
 
 #include <memory>
 #include <cassert>
@@ -33,7 +34,8 @@ public:
 
     virtual void run() override
     {
-        TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
+        if (preRun())
+            TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
     }
 
     bool shouldVisitTemplateInstantiations () const { return true; }
@@ -80,8 +82,10 @@ bool PtrVector::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr* expr)
 }
 
 
-loplugin::Plugin::Registration< PtrVector > X("ptrvector");
+loplugin::Plugin::Registration< PtrVector > ptrvector("ptrvector");
 
-}
+} // namespace
+
+#endif // LO_CLANG_SHARED_PLUGINS
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */