call notify after we write the kDone verb

git-svn-id: http://skia.googlecode.com/svn/trunk@1401 2bbb7eff-a529-9590-31e7-b0007b416f81

src/pipe/SkGPipeWrite.cpp

@@ -83,6 +83,7 @@ public:
     void finish() {
         if (!fDone) {
             this->writeOp(kDone_DrawOp);
+            this->doNotify();
             fDone = true;
         }
     }