revert some changes after the review

core/src/config.cpp

@@ -36,7 +36,7 @@ void ConfigManager::load(json def, bool lock) {
         file >> conf;
         file.close();
     }
-    catch (const std::exception& e) {
+    catch (std::exception e) {
         spdlog::error("Config file '{0}' is corrupted, resetting it", path);
         conf = def;
         save(false);

core/src/core.cpp

@@ -337,7 +337,7 @@ int sdrpp_main(int argc, char* argv[]) {
 #else
     const char* glsl_version = "#version 120";
     GLFWmonitor* monitor = NULL;
-    for (size_t i = 0; i < OPENGL_VERSION_COUNT; i++) {
+    for (int i = 0; i < OPENGL_VERSION_COUNT; i++) {
         glsl_version = OPENGL_VERSIONS_GLSL[i];
         glfwWindowHint(GLFW_CLIENT_API, OPENGL_VERSIONS_IS_ES[i] ? GLFW_OPENGL_ES_API : GLFW_OPENGL_API);
         glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, OPENGL_VERSIONS_MAJOR[i]);
@@ -450,12 +450,8 @@ int sdrpp_main(int argc, char* argv[]) {
     bandplan::loadColorTable(bandColors);
 
     bool _maximized = maximized;
-    int fsWidth = 0;
-    int fsHeight = 0;
-    int fsPosX = 0;
-    int fsPosY = 0;
-    int _winWidth = 0;
-    int _winHeight = 0;
+    int fsWidth, fsHeight, fsPosX, fsPosY;
+    int _winWidth, _winHeight;
     glfwGetWindowSize(core::window, &_winWidth, &_winHeight);
 
     if (fullScreen) {

core/src/gui/main_window.cpp

@@ -487,7 +487,7 @@ void MainWindow::draw() {
         if (gui::menu.draw(firstMenuRender)) {
             core::configManager.acquire();
             json arr = json::array();
-            for (size_t i = 0; i < gui::menu.order.size(); i++) {
+            for (int i = 0; i < gui::menu.order.size(); i++) {
                 arr[i]["name"] = gui::menu.order[i].name;
                 arr[i]["open"] = gui::menu.order[i].open;
             }

core/src/utils/networking.cpp

@@ -288,7 +288,7 @@ namespace net {
                 }
                 entry.handler(std::move(client), entry.ctx);
             }
-            catch (const std::exception& e) {
+            catch (std::exception e) {
                 listening = false;
                 return;
             }