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/pkgcache.cc b/apt-pkg/pkgcache.cc
index 9fe382108..dc7698edd 100644
--- a/apt-pkg/pkgcache.cc
+++ b/apt-pkg/pkgcache.cc
@@ -1059,3 +1059,5 @@ bool pkgCache::PrvIterator::IsMultiArchImplicit() const
    return false;
 }
 									/*}}}*/
+
+pkgCache::~pkgCache() {}