add try/except in example when changing page

Author: tshirtman

examples/pdf/main.py

@@ -27,7 +27,10 @@ def __init__(self, **kwargs):
         self.add_widget(b)
 
     def next(self, *_):
-        self.pdf.page += 1
+        try:
+            self.pdf.page += 1
+        except:
+            self.pdf.page = 0
 
     def prececent(self, *_):
         self.pdf.page -= 1

kivy/uix/image.py

@@ -234,9 +234,7 @@ def _on_tex_change(self, *largs):
 
     def on_page(self, instance, value):
         self._coreimage.page = value
-        #image.bind(on_load=self.on_source_load)
-        #image.bind(on_texture=self._on_tex_change)
-        #self.texture = image.texture
+
 
 class AsyncImage(Image):
     '''Asynchronous Image class, see module documentation for more information.