Beware of modifying a list being iterated

Change-Id: Ib9cf1a47eb20bd28d954ddcded89f67cf6865f1c
diff --git a/android/mobile-config.py b/android/mobile-config.py
index ff2fd53..cdf0afc 100755
--- a/android/mobile-config.py
+++ b/android/mobile-config.py
@@ -54,18 +54,26 @@ if __name__ == '__main__':
    tree = ET.parse(sys.argv[1])
    root = tree.getroot()

    saved = 0
    total = 0
    for child in root:
        section = child.attrib['{http://openoffice.org/2001/registry}name']
        package = child.attrib['{http://openoffice.org/2001/registry}package']
        size = len(ET.tostring(child));
        total = total + size
        key = '%s/%s' % (package, section)
        if key in main_xcd_discard:
            root.remove(child)
            print 'removed %s - saving %d' % (key, size)
            saved = saved + size
        total += len(ET.tostring(child))

    saved = 0
    restarted = True

    while restarted:
        restarted = False
        for child in root:
            section = child.attrib['{http://openoffice.org/2001/registry}name']
            package = child.attrib['{http://openoffice.org/2001/registry}package']
            size = len(ET.tostring(child));
            key = '%s/%s' % (package, section)
            if key in main_xcd_discard:
                root.remove(child)
                print 'removed %s - saving %d' % (key, size)
                saved = saved + size
                restarted = True
                break

    print "saved %d of %d bytes: %2.f%%" % (saved, total, saved*100.0/total)