MOHAWK: RIVEN: Fix crash when clicking on a marble with the mouse moving

In some cases a mouse moved event could be handled between the moment
the xtakeit script was queued and the moment it is executed (on the same
frame), causing the mouse position no longer to be over a marble
rectangle.

Fixes #10647.

1 files changed, 6 insertions, 2 deletions

diff --git a/engines/mohawk/riven_stacks/tspit.cpp b/engines/mohawk/riven_stacks/tspit.cpp
index 9546d946ab..85e4b2f4ae 100644
--- a/engines/mohawk/riven_stacks/tspit.cpp
+++ b/engines/mohawk/riven_stacks/tspit.cpp
@@ -362,8 +362,12 @@ void TSpit::xtakeit(const ArgumentArray &args) {
 		}
 	}
 
-	// xtakeit() shouldn't be called if we're not on a marble hotspot
-	assert(marble != 0);
+	if (marble == 0) {
+		// xtakeit() shouldn't be called if we're not on a marble hotspot,
+		// but maybe another mouse moved event was received between the moment
+		// this script was queued and the moment it was executed.
+		return;
+	}
 
 	// Redraw the background
 	_vm->getCard()->drawPicture(1);