[PDF] If the clip is empty, we shouldn't bother actually drawing anything.

Plus, fix ifdef for flate test.

Review URL: http://codereview.appspot.com/4420041

git-svn-id: http://skia.googlecode.com/svn/trunk@1141 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/FlateTest.cpp b/tests/FlateTest.cpp
index f8e0921..fe2bb4a 100644
--- a/tests/FlateTest.cpp
+++ b/tests/FlateTest.cpp
@@ -90,7 +90,7 @@
 
 static void TestFlateCompression(skiatest::Reporter* reporter) {
     TestFlate(reporter, NULL, 0);
-#ifdef SK_ZLIB_INCLUDE
+#if defined(SK_ZLIB_INCLUDE) && !defined(SK_DEBUG)
     REPORTER_ASSERT(reporter, SkFlate::HaveFlate());
 
     SkMemoryStream memStream;