fix reference

Author: onon1101

include/Core/Context.hpp

@@ -29,7 +29,7 @@ class Context {
     void SetExit(bool exit) { m_Exit = exit; }
     void SetWindowWidth(unsigned int width) { m_WindowWidth = width; }
     void SetWindowHeight(unsigned int height) { m_WindowHeight = height; }
-    void SetWindowIcon(const std::string path);
+    void SetWindowIcon(const std::string &path);
 
     void Setup();
     void Update();

src/Core/Context.cpp

@@ -135,7 +135,7 @@ std::shared_ptr<Context> Context::GetInstance() {
     return s_Instance;
 }
 
-void Context::SetWindowIcon(const std::string path) {
+void Context::SetWindowIcon(const std::string &path) {
     SDL_Surface *image = IMG_Load(path.c_str());
     SDL_SetWindowIcon(m_Window, image);
 }