Fix potentional race conditions

imagescrollareagl.cpp

@@ -97,13 +97,15 @@ ImageWidget::~ImageWidget()
 void ImageWidget::setImage(std::shared_ptr<RawImage> image, int index)
 {
     if(image == nullptr)return;
-
+    makeCurrent();
     m_rawImage = image;
 
     m_imgWidth = image->width();
     m_imgHeight = image->height();
     m_currentImg = index;
 
+    if(!m_image)return;
+
     const RawImageType &rawImageType = rawImageTypes[image->type()];
     m_srgb = rawImageType.textureFormat == QOpenGLTexture::SRGB8 || rawImageType.textureFormat == QOpenGLTexture::SRGB8_Alpha8;
     m_bwImg = rawImageType.bw;
@@ -489,6 +491,9 @@ void ImageWidget::initializeGL()
 
     m_transferOptions = std::unique_ptr<QOpenGLPixelTransferOptions>(new QOpenGLPixelTransferOptions);
     m_transferOptions->setAlignment(1);
+
+    if(m_rawImage)
+        setImage(m_rawImage, m_currentImg);
 }
 
 void ImageWidget::dragEnterEvent(QDragEnterEvent *event)