Return false for isSplitSelectionActive() if controller not initialized

Test: unable to repro
Fixes: 342716244
Flag: EXEMPT bugfix
Change-Id: I9d7d54d5f7571286778c0e82ef4082f9b5843c1d
(cherry picked from commit b449116345fdf2bc8f778efa5879b8236aca1217)
Merged-In: I9d7d54d5f7571286778c0e82ef4082f9b5843c1d
diff --git a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
index 702997c..602c35c 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
@@ -740,6 +740,9 @@
 
     @Override
     public boolean isSplitSelectionActive() {
+        if (mSplitSelectStateController == null) {
+            return false;
+        }
         return mSplitSelectStateController.isSplitSelectActive();
     }