fix headless mode fatal error in some systems

src/content/ContentControl.cpp

@@ -12,7 +12,7 @@
 #include "logic/scripting/scripting.hpp"
 #include "core_defs.hpp"
 
-static void load_configs(Input& input, const io::path& root) {
+static void load_configs(Input* input, const io::path& root) {
     auto configFolder = root / "config";
 }
 
@@ -26,7 +26,7 @@ static std::vector<io::path> default_content_sources {
 ContentControl::ContentControl(
     const Project& project,
     EnginePaths& paths,
-    Input& input,
+    Input* input,
     std::function<void()> postContent
 )
     : paths(paths),

src/content/ContentControl.hpp

@@ -19,7 +19,7 @@ public:
     ContentControl(
         const Project& project,
         EnginePaths& paths,
-        Input& input,
+        Input* input,
         std::function<void()> postContent
     );
     ~ContentControl();
@@ -49,7 +49,7 @@ public:
     const std::vector<io::path>& getContentSources() const;
 private:
     EnginePaths& paths;
-    Input& input;
+    Input* input;
     std::unique_ptr<Content> content;
     std::function<void()> postContent;
     std::vector<std::string> basePacks;