Add null check for recents when tapping on Taskbar icons

Fixes: 270669636
Test: Couldn't repro, but visually we have checks for
recentsView != null && OTHER_CONDITION, but in the else
case we don't check if recentsView being null is the reason
the if-block didn't get triggered

Change-Id: I72e7480bac56c7e7b7edb73edac4309e9923d302
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
index dde7d94..b021671 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
@@ -876,7 +876,11 @@
      * as if the user tapped on it (preserving the split pair). Otherwise, launch it normally
      * (potentially breaking a split pair).
      */
-    private void launchFromTaskbarPreservingSplitIfVisible(RecentsView recents, ItemInfo info) {
+    private void launchFromTaskbarPreservingSplitIfVisible(@Nullable RecentsView recents,
+            ItemInfo info) {
+        if (recents == null) {
+            return;
+        }
         ComponentKey componentToBeLaunched = new ComponentKey(info.getTargetComponent(), info.user);
         recents.getSplitSelectController().findLastActiveTaskAndRunCallback(
                 componentToBeLaunched,