wayland: destroy lock surfaces synchronously before unlocking

Author: Luke458

src/wayland/session_lock.cpp

@@ -70,7 +70,7 @@ void WlSessionLock::updateSurfaces(bool show, WlSessionLock* old) {
 	for (auto& [screen, surface]: map) {
 		if (!screens.contains(screen)) {
 			this->surfaces.remove(screen);
-			surface->deleteLater();
+			delete surface;
 		}
 	}
 
@@ -139,14 +139,13 @@ void WlSessionLock::realizeLockTarget(WlSessionLock* old) {
 void WlSessionLock::unlock() {
 	if (this->isLocked()) {
 		this->lockTarget = false;
-		this->manager->unlock();
-
 		for (auto* surface: this->surfaces) {
-			surface->deleteLater();
+			delete surface;
 		}
-
 		this->surfaces.clear();
 
+		this->manager->unlock();
+
 		emit this->lockStateChanged();
 	}
 }