Fix assert

Change-Id: If764fe38e215473590a6fe6be910827a38382054
diff --git a/vm/jdwp/JdwpMain.cpp b/vm/jdwp/JdwpMain.cpp
index d3e2234..90e4c45 100644
--- a/vm/jdwp/JdwpMain.cpp
+++ b/vm/jdwp/JdwpMain.cpp
@@ -442,7 +442,7 @@
 
     /* now get the current time */
     s8 now = dvmJdwpGetNowMsec();
-    assert(now > last);
+    assert(now >= last);
 
     ALOGV("+++ debugger interval=%lld", now - last);
     return now - last;