fix an old bug revealed by PyQt5

stonebig · stonebig · commit ca729b1c0b6d · 2015-08-06T19:42:36.000+02:00
diff --git a/winpython/controlpanel.py b/winpython/controlpanel.py
@@ -666,7 +666,7 @@ def process_packages(self, action):
         except AttributeError:
             status = self.parent().statusBar()
         progress = QProgressDialog(self, Qt.FramelessWindowHint)
-        progress.setMaximum(len(packages)-1)
+        progress.setMaximum(len(packages)) #  old vicious bug:len(packages)-1
         for index, package in enumerate(packages):
             progress.setValue(index)
             progress.setLabelText("%s %s %s..."
