Fixed a memory leak in BLE (issue #4753) (#4761)

* Fixed crash on delete after disconnect

* Fixed memory leak when getting characteristics

* Removed guard

Co-authored-by: ushiboy <ushiboy.dev@gmail.com>

libraries/BLE/src/BLERemoteCharacteristic.cpp

@@ -52,6 +52,7 @@ BLERemoteCharacteristic::BLERemoteCharacteristic(
  */
 BLERemoteCharacteristic::~BLERemoteCharacteristic() {
 	removeDescriptors();   // Release resources for any descriptor information we may have allocated.
+	free(m_rawData);
 } // ~BLERemoteCharacteristic