fix crash when there isn't any photos on a profile

weboob/applications/qhavesex/contacts.py

@@ -300,10 +300,14 @@ class ContactProfile(QWidget):
             logging.warning('Not supported widget: %r' % widget)
 
     def previousClicked(self):
+        if len(self.contact.photos) == 0:
+            return
         self.displayed_photo_idx = (self.displayed_photo_idx - 1) % len(self.contact.photos)
         self.display_photo()
 
     def nextClicked(self):
+        if len(self.contact.photos) == 0:
+            return
         self.displayed_photo_idx = (self.displayed_photo_idx + 1) % len(self.contact.photos)
         self.display_photo()
 

weboob/tools/browser/browser.py

@@ -230,7 +230,8 @@ class StandardBrowser(mechanize.Browser):
             else:
                 return None
         except (mechanize.BrowserStateError, BrowserRetry):
-            self.home()
+            if hasattr(self, 'home'):
+                self.home()
             return mechanize.Browser.open(self, *args, **kwargs)
 
     def get_exception(self, e):