protect unregister() from someone trying to unregister an un-enabled event. total extreme case, but whatever. added test.
git-svn-id: http://svn.openlayers.org/trunk/openlayers@873 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
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@@ -121,10 +121,12 @@ OpenLayers.Events.prototype = {
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obj = this.object;
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}
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var listeners = this.listeners[type];
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for (var i = 0; i < listeners.length; i++) {
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if (listeners[i].obj == obj && listeners[i].func == func) {
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listeners.splice(i, 1);
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break;
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if (listeners != null) {
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for (var i = 0; i < listeners.length; i++) {
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if (listeners[i].obj == obj && listeners[i].func == func) {
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listeners.splice(i, 1);
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break;
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}
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}
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}
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},
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