Fix various warnings about unused variables and functions

Change-Id: I430b87ab0afa8bf32115d44e8acb94271988d229
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/cmakeprojectmanager/fileapidataextractor.cpp

@@ -123,6 +123,8 @@ PreprocessedData preprocess(FileApiData &data,
                             const FilePath &buildDirectory,
                             QString &errorMessage)
 {
+    Q_UNUSED(errorMessage)
+
     PreprocessedData result;
 
     result.cache = std::move(data.cache); // Make sure this is available, even when nothing else is

src/plugins/coreplugin/systemsettings.cpp

@@ -58,6 +58,7 @@ namespace Core {
 namespace Internal {
 
 // TODO: move to somewhere in Utils
+#ifdef ENABLE_CRASHPAD
 static QString formatSize(qint64 size)
 {
     QStringList units {QObject::tr("Bytes"), QObject::tr("KB"), QObject::tr("MB"),
@@ -72,6 +73,7 @@ static QString formatSize(qint64 size)
     return i == 0 ? QString("%0 %1").arg(outputSize).arg(units[i]) // Bytes
                   : QString("%0 %1").arg(outputSize, 0, 'f', 2).arg(units[i]); // KB, MB, GB, TB
 }
+#endif // ENABLE_CRASHPAD
 
 class SystemSettingsWidget : public IOptionsPageWidget
 {

src/plugins/qmldesigner/designercore/imagecache/imagecachecollector.cpp

@@ -72,6 +72,8 @@ void ImageCacheCollector::start(Utils::SmallStringView name,
                                 CaptureCallback captureCallback,
                                 AbortCallback abortCallback)
 {
+    Q_UNUSED(auxiliaryData)
+
     RewriterView rewriterView{RewriterView::Amend, nullptr};
     NodeInstanceView nodeInstanceView{m_connectionManager};
 
@@ -128,6 +130,10 @@ std::pair<QImage, QImage> ImageCacheCollector::createImage(Utils::SmallStringVie
                                                            Utils::SmallStringView state,
                                                            const ImageCache::AuxiliaryData &auxiliaryData)
 {
+    Q_UNUSED(filePath)
+    Q_UNUSED(state)
+    Q_UNUSED(auxiliaryData)
+
     return {};
 }
 
@@ -135,6 +141,10 @@ QIcon ImageCacheCollector::createIcon(Utils::SmallStringView filePath,
                                       Utils::SmallStringView state,
                                       const ImageCache::AuxiliaryData &auxiliaryData)
 {
+    Q_UNUSED(filePath)
+    Q_UNUSED(state)
+    Q_UNUSED(auxiliaryData)
+
     return {};
 }