Cleanup code with designated initializer lists

src/engine/downloadmanager.cpp

@@ -172,9 +172,9 @@ std::shared_ptr<DownloadManager::FileFuture> DownloadManager::downloadFile(
             }
 
             ProgressInformation p = {
-                future,
-                std::chrono::system_clock::now(),
-                &progressCb
+                .future = future,
+                .startTime = std::chrono::system_clock::now(),
+                .callback = &progressCb
             };
             #if LIBCURL_VERSION_NUM >= 0x072000
             // xferinfo was introduced in 7.32.0, if a lower curl version is used the

src/engine/moduleengine.cpp

@@ -171,7 +171,7 @@ std::vector<OpenSpaceModule*> ModuleEngine::modules() const {
 }
 
 ghoul::systemcapabilities::Version ModuleEngine::requiredOpenGLVersion() const {
-    ghoul::systemcapabilities::Version version = { 0, 0, 0 };
+    ghoul::systemcapabilities::Version version = { .major = 0, .minor = 0, .release = 0 };
 
     for (const std::unique_ptr<OpenSpaceModule>& m : _modules) {
         version = std::max(version, m->requiredOpenGLVersion());

src/engine/openspaceengine.cpp

@@ -486,7 +486,11 @@ void OpenSpaceEngine::initializeGL() {
     bool debugActive = global::configuration->openGLDebugContext.isActive;
 
     // Debug output is not available before 4.3
-    const ghoul::systemcapabilities::Version minVersion = { 4, 3, 0 };
+    const ghoul::systemcapabilities::Version minVersion = {
+        .major = 4,
+        .minor = 3,
+        .release = 0
+    };
     if (debugActive && OpenGLCap.openGLVersion() < minVersion) {
         LINFO("OpenGL Debug context requested, but insufficient version available");
         debugActive = false;