Build list in focusCid and specify exception

model.cards may be a protobuf sequence but focusCid needs list's index
method, so convert to list, but only if needed.

qt/aqt/browser.py

@@ -190,7 +190,7 @@ class DataModel(QAbstractTableModel):
             ctx = SearchContext(search=txt, browser=self.browser)
             gui_hooks.browser_will_search(ctx)
             if ctx.card_ids is None:
-                ctx.card_ids = list(self.col.find_cards(ctx.search, order=ctx.order))
+                ctx.card_ids = self.col.find_cards(ctx.search, order=ctx.order)
             gui_hooks.browser_did_search(ctx)
             self.cards = ctx.card_ids
         except Exception as err:
@@ -1829,8 +1829,8 @@ where id in %s"""
 
     def focusCid(self, cid):
         try:
-            row = self.model.cards.index(cid)
-        except:
+            row = list(self.model.cards).index(cid)
+        except ValueError:
             return
         self.form.tableView.clearSelection()
         self.form.tableView.selectRow(row)