n#862510: Fix text rotation.

Fix breaks document in n#783433 - the one there is
damaged - resaving it using mso 2010 should fix the problem there.

Change-Id: Ib2ee7ab20489d716dc189ac6810d705763a16476

oox/source/drawingml/transform2dcontext.cxx

@@ -46,7 +46,8 @@ Transform2DContext::Transform2DContext( ContextHandler2Helper& rParent, const At
     }
     else
     {
-        mrShape.getTextBody()->getTextProperties().moRotation = rAttribs.getInteger( XML_rot );
+        if( rAttribs.hasAttribute( XML_rot ) )
+            mrShape.getTextBody()->getTextProperties().moRotation = -rAttribs.getInteger( XML_rot ).get();
     }
 }