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Avoid trapping already trapped properties

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Related feedback:
- https://github.com/uBlockOrigin/uBlock-issues/issues/156#issuecomment-712249945

When the client code assigned a variable to itself, this
would cause the scriptlet to try to re-trap already
trapped properties.
This commit is contained in:
Raymond Hill 2020-10-19 12:01:55 -04:00
parent 418dc5d8d1
commit b5b0be0bf8
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assets/resources/scriptlets.js
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@ -808,6 +808,7 @@
return this.v; return this.v;
}, },
setter: function(a) { setter: function(a) {
if ( a === this.v ) { return; }
this.v = a; this.v = a;
if ( a instanceof Object ) { if ( a instanceof Object ) {
trapChain(a, chain); trapChain(a, chain);