tracker/pt: workaround unexplained leak

Somehow, using unique_ptr causes a leak at destruct time. The stored
pointer isn't freed. It works perfectly fine with shared_ptr.

It seems I'm doing things correctly with a move constructor for
unique_ptr in the Tracker_PT class, as well as the pointer
initialization ctor in `module.cpp'. Who the hell knows what's happening
behind the scenes.

1 files changed, 6 insertions, 4 deletions

diff --git a/tracker-pt/pt-api.hpp b/tracker-pt/pt-api.hpp
index 833a640e..0156fdd7 100644
--- a/tracker-pt/pt-api.hpp
+++ b/tracker-pt/pt-api.hpp
@@ -148,12 +148,14 @@ struct OTR_PT_EXPORT pt_settings final : options::opts
 
 struct OTR_PT_EXPORT pt_runtime_traits
 {
+    template<typename t> using pointer = std::shared_ptr<t>;
+
     pt_runtime_traits();
     virtual ~pt_runtime_traits();
 
-    virtual std::unique_ptr<pt_camera> make_camera() const = 0;
-    virtual std::unique_ptr<pt_point_extractor> make_point_extractor() const = 0;
-    virtual std::unique_ptr<pt_frame> make_frame() const = 0;
-    virtual std::unique_ptr<pt_preview> make_preview(int w, int h) const = 0;
+    virtual pointer<pt_camera> make_camera() const = 0;
+    virtual pointer<pt_point_extractor> make_point_extractor() const = 0;
+    virtual pointer<pt_frame> make_frame() const = 0;
+    virtual pointer<pt_preview> make_preview(int w, int h) const = 0;
     virtual QString get_module_name() const = 0;
 };