fix: optimization: PVS-Studio warning V832

It's better to use '= default;' syntax instead of empty constructor and destructor body.
Using '= default;' can help the compiler generate more optimal code.

Reported by: PVS-Studio

Signed-off-by: Vyacheslav Ivanov <islavaivanov76@gmail.com>

src/graphics/core/Atlas.cpp

@@ -19,8 +19,7 @@ Atlas::Atlas(
     }
 }
 
-Atlas::~Atlas() {
-}
+Atlas::~Atlas() = default;
 
 void Atlas::prepare() {
     texture = Texture::from(image.get());

src/graphics/core/Atlas.hpp

@@ -47,7 +47,7 @@ class AtlasBuilder {
     std::vector<atlasentry> entries;
     std::set<std::string> names;
 public:
-    AtlasBuilder() {}
+    AtlasBuilder() = default;
     void add(const std::string& name, std::unique_ptr<ImageData> image);
     bool has(const std::string& name) const;
     const std::set<std::string>& getNames() { return names; };

src/graphics/core/Font.cpp

@@ -12,8 +12,7 @@ Font::Font(std::vector<std::unique_ptr<Texture>> pages, int lineHeight, int yoff
     : lineHeight(lineHeight), yoffset(yoffset), pages(std::move(pages)) {
 }
 
-Font::~Font(){
-}
+Font::~Font() = default;
 
 int Font::getYOffset() const {
     return yoffset;

src/graphics/core/ImageData.cpp

@@ -41,8 +41,7 @@ ImageData::ImageData(ImageFormat format, uint width, uint height, const ubyte* d
     std::memcpy(this->data.get(), data, width * height * pixsize);
 }
 
-ImageData::~ImageData() {
-}
+ImageData::~ImageData() = default;
 
 void ImageData::flipX() {
     switch (format) {

src/graphics/core/PostProcessing.cpp

@@ -18,8 +18,7 @@ PostProcessing::PostProcessing() {
     quadMesh = std::make_unique<Mesh>(vertices, 6, attrs);
 }
 
-PostProcessing::~PostProcessing() {
-}
+PostProcessing::~PostProcessing() = default;
 
 void PostProcessing::use(DrawContext& context) {
     const auto& vp = context.getViewport();

src/graphics/core/Shader.cpp

@@ -32,7 +32,7 @@ uint Shader::getUniformLocation(const std::string& name) {
     auto found = uniformLocations.find(name);
     if (found == uniformLocations.end()) {
         uint location = glGetUniformLocation(id, name.c_str());
-        uniformLocations.emplace(name, location);
+        uniformLocations.try_emplace(name, location);
         return location;
     }
     return found->second;

src/graphics/core/TextureAnimation.hpp

@@ -22,7 +22,7 @@ struct Frame {
 class TextureAnimation {
 public:
     TextureAnimation(Texture* srcTex, Texture* dstTex) : srcTexture(srcTex), dstTexture(dstTex) {};
-    ~TextureAnimation() {};
+    ~TextureAnimation() = default;
 
     void addFrame(const Frame& frame) { frames.emplace_back(frame); };