Improper initialisation of m_detectedTargets hash in QtNfc

In the function onTargetDiscovered in the file Qt/5.11.0/Src/qtconnectivity/src/nfc/qnearfieldmanager_android.cpp the line

NearFieldTarget *&target = m_detectedTargets[uid];

inserts into the QHash m_detectedTargets a key of uid and an unknown value which assigns target an unknown value. This is because the m_detectedTargets QHash is not initialised with a value for uid. The m_detectedTargets is not initialised anywhere in the source as verified by a search through the complete Qt source code. This can cause a crash which does on my phone.