Use global threadpool

src/BlurhashProvider.h

@@ -34,12 +34,12 @@ private:
 class BlurhashResponse : public QQuickImageResponse
 {
 public:
-    BlurhashResponse(const QString &id, const QSize &requestedSize, QThreadPool *pool)
+    BlurhashResponse(const QString &id, const QSize &requestedSize)
     {
         auto runnable = new BlurhashRunnable(id, requestedSize);
         connect(runnable, &BlurhashRunnable::done, this, &BlurhashResponse::handleDone);
         connect(runnable, &BlurhashRunnable::error, this, &BlurhashResponse::handleError);
-        pool->start(runnable);
+        QThreadPool::globalInstance()->start(runnable);
     }
 
     QQuickTextureFactory *textureFactory() const override
@@ -72,9 +72,6 @@ public slots:
     QQuickImageResponse *
     requestImageResponse(const QString &id, const QSize &requestedSize) override
     {
-        return new BlurhashResponse(id, requestedSize, &pool);
+        return new BlurhashResponse(id, requestedSize);
     }
-
-private:
-    QThreadPool pool;
 };

src/JdenticonProvider.cpp

@@ -70,12 +70,11 @@ clipRadius(QPixmap img, double radius)
 JdenticonResponse::JdenticonResponse(const QString &key,
                                      bool crop,
                                      double radius,
-                                     const QSize &requestedSize,
-                                     QThreadPool *pool)
+                                     const QSize &requestedSize)
 {
     auto runnable = new JdenticonRunnable(key, crop, radius, requestedSize);
     connect(runnable, &JdenticonRunnable::done, this, &JdenticonResponse::handleDone);
-    pool->start(runnable);
+    QThreadPool::globalInstance()->start(runnable);
 }
 
 JdenticonRunnable::JdenticonRunnable(const QString &key,

src/JdenticonProvider.h

@@ -36,11 +36,7 @@ private:
 class JdenticonResponse : public QQuickImageResponse
 {
 public:
-    JdenticonResponse(const QString &key,
-                      bool crop,
-                      double radius,
-                      const QSize &requestedSize,
-                      QThreadPool *pool);
+    JdenticonResponse(const QString &key, bool crop, double radius, const QSize &requestedSize);
 
     QQuickTextureFactory *textureFactory() const override
     {
@@ -86,9 +82,6 @@ public slots:
             }
         }
 
-        return new JdenticonResponse(id_, crop, radius, requestedSize, &pool);
+        return new JdenticonResponse(id_, crop, radius, requestedSize);
     }
-
-private:
-    QThreadPool pool;
 };