Setting m_payloadSize is already handled by qvariant2qobject and it is of type qint64 not int
Summary
kdeconnectd crashes when a file with a size > INT_MAX is shared
Test Plan
Before:
Share a file with kdeconnect-kde with a file size > INT_MAX (2147483647) and observe that kdeconnectd crashes
After:
Repeat the above test and kdeconnect-kde should not crash