Continue to remove users when destroyUserKey fails.

destroyUserKey can fail if the user is partially created; even when
something fails it still destroys all it can. Its failure shouldn't
halt user removal.

Bug: 26847403
Change-Id: Iab1f551d19fd777198387b463b270c2508d07fd5
diff --git a/services/core/java/com/android/server/pm/UserManagerService.java b/services/core/java/com/android/server/pm/UserManagerService.java
index ac19e24..102a67c 100644
--- a/services/core/java/com/android/server/pm/UserManagerService.java
+++ b/services/core/java/com/android/server/pm/UserManagerService.java
@@ -2189,7 +2189,13 @@
     }
 
     private void removeUserState(final int userHandle) {
-        mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle);
+        try {
+            mContext.getSystemService(StorageManager.class).destroyUserKey(userHandle);
+        } catch (IllegalStateException e) {
+            // This may be simply because the user was partially created.
+            Slog.i(LOG_TAG,
+                "Destroying key for user " + userHandle + " failed, continuing anyway", e);
+        }
         // Cleanup package manager settings
         mPm.cleanUpUser(this, userHandle);