Remove undefined behavior in array access test case

semantic/array_access_on_returned_value.java

@@ -2,11 +2,13 @@ class Main {
     public static void main(String[] arguments) {
         Main main = new Main();
         main.getArray()[0] = 1;
-        
+
         new Main().getArray()[0] = 2;
     }
 
     public int[] getArray() {
-        return new int[0];
+        int[] result = new int[1];
+        result[0] = 42;
+        return result;
     }
 }