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fix subtraction underflow

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This commit is contained in:
Wez Furlong 2019-06-22 13:14:08 -07:00
parent 4c877d493f
commit 7751a85826
1 changed files with 1 additions and 1 deletions
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2
src/server/listener.rs
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@ -497,7 +497,7 @@ impl ClientSurfaceState {
// so that multiple clients have an opportunity to
// resync from a smaller delta
self.surface
.flush_changes_older_than(new_seq - (rows * cols * 2));
.flush_changes_older_than(new_seq.saturating_sub(rows * cols * 2));
(new_seq, changes)
}
}