Fix sleep test

DNO-151

Change-Id: Ia6c0047a6d79311d8f109ac1cd7847fb1bebbf95
diff --git a/third_party/nacl-ported-tests/sleep/sleep_test.cc b/third_party/nacl-ported-tests/sleep/sleep_test.cc
index aefa087..1bd545b 100644
--- a/third_party/nacl-ported-tests/sleep/sleep_test.cc
+++ b/third_party/nacl-ported-tests/sleep/sleep_test.cc
@@ -37,6 +37,6 @@
   unsigned int unslept = sleep(1);
   end = time(NULL);
   time_t elapsed_time = (end - start);
-  EXPECT_EQ(elapsed_time, 1); // Should have slept for 1 sec
+  EXPECT_GE(elapsed_time, 1); // Should have slept for at least 1 sec
   EXPECT_EQ(unslept, 0u);
 }