Fix JDWP count event modifier

Bug: 14053614
Change-Id: I736f6d6802e58e7a4fb29d0558bdd2abd3b2a48e
diff --git a/runtime/jdwp/jdwp_event.cc b/runtime/jdwp/jdwp_event.cc
index 9b3ea2e..3b2a6d3 100644
--- a/runtime/jdwp/jdwp_event.cc
+++ b/runtime/jdwp/jdwp_event.cc
@@ -422,6 +422,9 @@
     case MK_COUNT:
       CHECK_GT(pMod->count.count, 0);
       pMod->count.count--;
+      if (pMod->count.count > 0) {
+        return false;
+      }
       break;
     case MK_CONDITIONAL:
       CHECK(false);  // should not be getting these