Fixed bug on incorrectly revisiting same block.

Rationale:
Aart's fuzz tester found this particular bug, where
revisiting a block (after dynamic bce) would cause
static array length based bce to feed into itself
and thus incorrectly remove a needed bounds check.

bug=27376274

Change-Id: I9163f283af355d444b4cec707f194fe2b67c2572
diff --git a/test/530-checker-loops/src/Main.java b/test/530-checker-loops/src/Main.java
index d5111b0..2e5fd25 100644
--- a/test/530-checker-loops/src/Main.java
+++ b/test/530-checker-loops/src/Main.java
@@ -633,6 +633,10 @@
     }
   }
 
+  //
+  // Verifier.
+  //
+
   public static void main(String[] args) {
     int[] empty = { };
     int[] x = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };