[libcalamares] Give GlobalStorage a parent

src/libcalamares/GlobalStorage.cpp

@@ -36,8 +36,8 @@ using CalamaresUtils::operator""_MiB;
 namespace Calamares
 {
 
-GlobalStorage::GlobalStorage()
+GlobalStorage::GlobalStorage( QObject* parent )
-    : QObject( nullptr )
+    : QObject( parent )
 {
 }
 

src/libcalamares/GlobalStorage.h

@@ -39,7 +39,7 @@ class GlobalStorage : public QObject
 {
     Q_OBJECT
 public:
-    explicit GlobalStorage();
+    explicit GlobalStorage( QObject* parent = nullptr );
 
     //NOTE: thread safety is guaranteed by JobQueue, which executes jobs one by one.
     //      If at any time jobs become concurrent, this class must be made thread-safe.

src/libcalamares/JobQueue.cpp

@@ -170,7 +170,7 @@ JobQueue::globalStorage() const
 JobQueue::JobQueue( QObject* parent )
     : QObject( parent )
     , m_thread( new JobThread( this ) )
-    , m_storage( new GlobalStorage() )
+    , m_storage( new GlobalStorage( this ) )
 {
     Q_ASSERT( !s_instance );
     s_instance = this;