Bugfix: don't create extra AxisItem when user provides them

Committed old changelog updates

CHANGELOG

@@ -3,12 +3,16 @@ pyqtgraph-0.9.11  [unreleased]
   Bugfixes:
     - Fixed git version string generation on python3
     - Fixed setting default values for out-of-bound points in pg.interpolateArray
-    - Fixed adding Docks to DockArea after all Docks have been removed
     - Fixed plot downsampling bug on python 3
+    - DockArea:
+        - Fixed adding Docks to DockArea after all Docks have been removed
+        - Fixed DockArea save/restoreState when area is empty
 
   New Features:
     - Preliminary PyQt5 support
-    - Dock titles can be changed
+    - DockArea:
+	- Dock titles can be changed after creation
+        - Added Dock.sigClosed
 
 pyqtgraph-0.9.10
 

pyqtgraph/graphicsItems/PlotItem/PlotItem.py

@@ -170,7 +170,10 @@ class PlotItem(GraphicsWidget):
             axisItems = {}
         self.axes = {}
         for k, pos in (('top', (1,1)), ('bottom', (3,1)), ('left', (2,0)), ('right', (2,2))):
-            axis = axisItems.get(k, AxisItem(orientation=k, parent=self))
+            if k in axisItems:
+                axis = axisItems[k]
+            else:
+                axis = AxisItem(orientation=k, parent=self)
             axis.linkToView(self.vb)
             self.axes[k] = {'item': axis, 'pos': pos}
             self.layout.addItem(axis, *pos)