Fixing a bug. Due to a race condition, the view of a closing window could get one release too many.

svn path=/trunk/matplotlib/; revision=8901

Author: mdehoon

src/_macosx.m

@@ -3755,7 +3755,6 @@ static void _data_provider_release(void* info, const void* data, size_t size)
     [window setDelegate: view];
     [window makeFirstResponder: view];
     [[window contentView] addSubview: view];
-    [view release];
     [window makeKeyAndOrderFront: nil];
 
     nwin++;
@@ -4854,6 +4853,10 @@ - (void)dealloc
     gstate = PyGILState_Ensure();
     Py_DECREF(manager);
     PyGILState_Release(gstate);
+    /* The reference count of the view that was added as a subview to the
+     * content view of this window was increased during the call to addSubview,
+     * and is decreased during the call to [super dealloc].
+     */
     [super dealloc];
 }
 @end