Fix viewing books via the Cover browser not working when in device vi…

…ew. Fixes #2092630 [Clicking on book cover images in Device view always throws an exception error](https://bugs.launchpad.net/calibre/+bug/2092630)

src/calibre/gui2/actions/view.py

@@ -326,6 +326,10 @@ def view_triggered(self, index):
     def view_specific_book(self, index):
         self._view_books([index])
 
+    def view_specific_calibre_book(self, index):
+        ids = [self.gui.library_view.model().id(index)]
+        self._view_calibre_books(ids)
+
     def view_random(self, *args):
         self.gui.iactions['Pick Random Book'].pick_random()
         self._view_books([self.gui.library_view.currentIndex()])

src/calibre/gui2/cover_flow.py

@@ -375,7 +375,7 @@ def __init__(self, *a, **kw):
         self.library_view.selectionModel().currentRowChanged.connect(self.sync_cf_to_listview)
         self.db_images = DatabaseImages(self.library_view.model(), self.is_cover_browser_visible)
         self.cover_flow.setImages(self.db_images)
-        self.cover_flow.itemActivated.connect(self.iactions['View'].view_specific_book)
+        self.cover_flow.itemActivated.connect(self.iactions['View'].view_specific_calibre_book)
         self.update_cover_flow_subtitle_font()
         button = self.cb_button
         if self.separate_cover_browser: