The source project of this merge request has been removed.
Fix build with Qt 5.14
std::hash is already specialized in Qt 5.14 [1], so we need to avoid redifining it with this version.
[1] 4469e36d7203a55a4e158a50f0e9effc3f2fa3c2 in qtbase.git
Edited by Heiko Becker