examples/deepzoom: fix Windows openslide import without OPENSLIDE_PATH

On Windows, if the OPENSLIDE_PATH environment variable isn't set, remember
to try importing openslide anyway, in case it's available in the system
search path.

Signed-off-by: Benjamin Gilbert <bgilbert@cs.cmu.edu>

Author: bgilbert

examples/deepzoom/deepzoom_multiserver.py

@@ -41,6 +41,8 @@
             import openslide
 
             os.environ['PATH'] = _orig_path
+    else:
+        import openslide
 else:
     import openslide
 

examples/deepzoom/deepzoom_server.py

@@ -40,6 +40,8 @@
             import openslide
 
             os.environ['PATH'] = _orig_path
+    else:
+        import openslide
 else:
     import openslide
 

examples/deepzoom/deepzoom_tile.py

@@ -44,6 +44,8 @@
             import openslide
 
             os.environ['PATH'] = _orig_path
+    else:
+        import openslide
 else:
     import openslide