add d-pointer, virtual destructors and de-inline de/constructors

To have a chance to keep the ABI for a while we need all three to team
up. One of them missing and we might loose, so ensuring that they are
available is a very tedious but needed task once in a while.

Git-Dch: Ignore

1 files changed, 2 insertions, 0 deletions

diff --git a/apt-pkg/pkgsystem.cc b/apt-pkg/pkgsystem.cc
index 14d090c7a..98daeb2b9 100644
--- a/apt-pkg/pkgsystem.cc
+++ b/apt-pkg/pkgsystem.cc
@@ -45,3 +45,5 @@ APT_PURE pkgSystem *pkgSystem::GetSystem(const char *Label)
    return 0;   
 }
 									/*}}}*/
+
+pkgSystem::~pkgSystem() {}