Add failing tests for destructuring void

Author: andrewbranch

tests/cases/conformance/es6/destructuring/destructuringVoid.ts

@@ -0,0 +1,3 @@
+// @strictNullChecks: false
+declare const v: void;
+const {} = v;

tests/cases/conformance/es6/destructuring/destructuringVoidStrictNullChecks.ts

@@ -0,0 +1,3 @@
+// @strictNullChecks: true
+declare const v: void;
+const {} = v;