Rearrange variables to finally fix distro_series segfault

src/source_package_publishing_history.cpp

@@ -29,7 +29,7 @@ source_package_publishing_history::source_package_publishing_history()
       lp(nullptr),
       _distro_series(std::nullopt),
       distro_series([this]() -> std::optional<::distro_series> {
-          if (distro_series_link.empty()) return std::nullopt;
+          if (!lp || distro_series_link.empty()) return std::nullopt;
           if (_distro_series) return _distro_series;
 
           auto response = lp ? lp->api_get(distro_series_link) : std::nullopt;

src/source_package_publishing_history.h

@@ -53,12 +53,14 @@ public:
     std::string source_package_name;
     std::string source_package_version;
 
-    void set_lp(launchpad* lp_ptr);
-    lazy_optional<::distro_series, std::function<std::optional<::distro_series>()>> distro_series;
-
 private:
     launchpad* lp;
     std::optional<::distro_series> _distro_series = std::nullopt;
+
+public:
+    void set_lp(launchpad* lp_ptr);
+    lazy_optional<::distro_series, std::function<std::optional<::distro_series>()>> distro_series;
+
 };
 
 #endif // SOURCE_PACKAGE_PUBLISHING_HISTORY