Fix false-positive unexpected EOF in preparse_scope.

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com

tests/jerry/var-decl.js

@@ -18,6 +18,7 @@ assert (z === undefined);
 assert (i === undefined);
 assert (j === undefined);
 assert (q === undefined);
+assert (v === undefined);
 
 eval ('var n');
 eval ('var m = 1');
@@ -46,3 +47,5 @@ for (var i, j = function () {var p;}; i === undefined; i = null)
 for (var q in {})
 {
 }
+
+{ var v = 1 }