Tear down Gr stuff before GL context in SampleApp
Review URL: http://codereview.appspot.com/6000043/



git-svn-id: http://skia.googlecode.com/svn/trunk@3639 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleApp.cpp b/samplecode/SampleApp.cpp
index 3ab9e89..1d50b5c 100644
--- a/samplecode/SampleApp.cpp
+++ b/samplecode/SampleApp.cpp
@@ -224,8 +224,6 @@
     }
 
     virtual void tearDownBackend(SampleWindow *win) {
-        win->detach();
-        fBackend = kNone_BackEndType;
 
         SkSafeUnref(fCurContext);
         fCurContext = NULL;
@@ -235,6 +233,9 @@
 
         SkSafeUnref(fCurRenderTarget);
         fCurRenderTarget = NULL;
+
+        win->detach();
+        fBackend = kNone_BackEndType;
     }
 
     virtual bool prepareCanvas(SampleWindow::DeviceType dType,