MonitorConstraint: fix clamping monitor index

I will test my patches, I promise.

diff --git a/js/ui/layout.js b/js/ui/layout.js
index c833a1bd520873ecc74590d25571ece8699d3ca8..333b8098548bb23cac5c30f028c0adb43bb4cf28 100644 (file)
--- a/js/ui/layout.js
+++ b/js/ui/layout.js
@@ -83,7 +83,7 @@ const MonitorConstraint = new Lang.Class({
         if (this._primary) {
             monitor = Main.layoutManager.primaryMonitor;
         } else {
-            let index = Math.max(this._index, Main.layoutManager.monitors.length);
+            let index = Math.min(this._index, Main.layoutManager.monitors.length - 1);
             monitor = Main.layoutManager.monitors[index];
         }