Ensure pointers in AndroidDeviceControllerWrapper are init to nullptr (…

…#13557)

Fixes #13556

Tested locally on an Android device on the reported code path without a crash.

src/controller/java/AndroidDeviceControllerWrapper.h

@@ -120,12 +120,12 @@ class AndroidDeviceControllerWrapper : public chip::Controller::DevicePairingDel
  bool mNodeIdRequested = false;
 
  // These fields allow us to release the string/byte array memory later.
- jstring ssidStr;
- jstring passwordStr;
- const char * ssid;
- const char * password;
- jbyteArray operationalDatasetBytes;
- jbyte * operationalDataset;
+ jstring ssidStr = nullptr;
+ jstring passwordStr = nullptr;
+ const char * ssid = nullptr;
+ const char * password = nullptr;
+ jbyteArray operationalDatasetBytes = nullptr;
+ jbyte * operationalDataset = nullptr;
 
  AndroidDeviceControllerWrapper(ChipDeviceControllerPtr controller) : mController(std::move(controller))
  {