Don't crash in bugreport on devices without BT

Bug: 21160862
Change-Id: Ia3295fc6ebbd8ad1b5d03c70c89370d09f9cbb03
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/BluetoothControllerImpl.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BluetoothControllerImpl.java
index 8d4f302..f1d5cb4 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/BluetoothControllerImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BluetoothControllerImpl.java
@@ -54,6 +54,9 @@
     public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
         pw.println("BluetoothController state:");
         pw.print("  mLocalBluetoothManager="); pw.println(mLocalBluetoothManager);
+        if (mLocalBluetoothManager == null) {
+            return;
+        }
         pw.print("  mEnabled="); pw.println(mEnabled);
         pw.print("  mConnecting="); pw.println(mConnecting);
         pw.print("  mLastDevice="); pw.println(mLastDevice);