Fixed RegExp.toString() throws a NullReferenceException if not called… #640
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… with a real RegExp instance
Bit of an obscure one this! RegExp.prototype.toString() throws a null reference exception if not called with a real RegExp instance.
This pull request brings the method behaviour in line with the v8 engine.
A polyfill library I'm trying to use tests the RegExp prototype this way and hence errors.