Minor fix to the generate-exports.py script

Now that we correctly export the ol.animation.*, ol.easing.* and ol.coordinate.* symbols we can make the generate-exports.py script work for more cases.

bin/generate-exports.py

@@ -278,7 +278,7 @@ def main(argv):
                     components = m.group('name').split('.')
                     if re.match(r'[A-Z]', components[-1]):
                         requires.add(name)
-                    elif len(components) > 2:
+                    elif len(components) > 1:
                         requires.add('.'.join(components[:-1]))
                 continue
             raise RuntimeError(line)