Update JIT test case

Author: kamil-tekiela

ext/opcache/tests/jit/assign_dim_002.phpt

@@ -81,6 +81,17 @@ function foo5() {
 }
 var_dump(foo5());
 
+function foo6() {
+    $a = false;
+    try {
+        $a[2] = 1;
+    } catch (Error $e) {
+        echo $e->getMessage(), "\n";
+    }
+    return $a;
+}
+var_dump(foo6());
+
 ?>
 --EXPECTF--
 array(1) {
@@ -136,3 +147,9 @@ array(1) {
 }
 Cannot use a scalar value as an array
 int(1)
+
+Deprecated: Automatic conversion of false to array is deprecated in %s
+array(1) {
+  [2]=>
+  int(1)
+}