leaks fix (valgrind full leak check) in world

src/graphics/core/Atlas.cpp

@@ -22,7 +22,7 @@ Atlas::~Atlas() {
 }
 
 void Atlas::prepare() {
-    texture.reset(Texture::from(image.get()));
+    texture = Texture::from(image.get());
 }
 
 bool Atlas::has(const std::string& name) const {

src/graphics/core/Texture.cpp

@@ -64,11 +64,11 @@ void Texture::setNearestFilter() {
     glBindTexture(GL_TEXTURE_2D, 0);
 }
 
-Texture* Texture::from(const ImageData* image) {
+std::unique_ptr<Texture> Texture::from(const ImageData* image) {
     uint width = image->getWidth();
     uint height = image->getHeight();
     const void* data = image->getData();
-    return new Texture((ubyte*)data, width, height, image->getFormat());
+    return std::make_unique<Texture>((ubyte*)data, width, height, image->getFormat());
 }
 
 uint Texture::getWidth() const {

src/graphics/core/Texture.hpp

@@ -31,7 +31,7 @@ public:
 
     virtual uint getId() const;
 
-    static Texture* from(const ImageData* image);
+    static std::unique_ptr<Texture> from(const ImageData* image);
 };
 
 #endif // GRAPHICS_CORE_TEXTURE_HPP_