jscript: Added support for Function constructor called as a function.

dlls/jscript/function.c

@@ -821,6 +821,7 @@ static HRESULT FunctionConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD fla
     TRACE("\n");
 
     switch(flags) {
+    case DISPATCH_METHOD:
     case DISPATCH_CONSTRUCT: {
         IDispatch *ret;
 

dlls/jscript/tests/api.js

@@ -1869,6 +1869,16 @@ ok(tmp === undefined, "func() = " + tmp);
 tmp = func.toString();
 ok(tmp == "function anonymous() {\n\n}", "func.toString() = " + tmp);
 
+// Function constructor called as function
+func = Function("return 3;");
+
+tmp = func();
+ok(tmp === 3, "func() = " + tmp);
+ok(func.call() === 3, "func.call() = " + tmp);
+ok(func.length === 0, "func.length = " + func.length);
+tmp = func.toString();
+ok(tmp === "function anonymous() {\nreturn 3;\n}", "func.toString() = " + tmp);
+
 func = (function() {
         var tmp = 3;
         return new Function("return tmp;");