Prevent overwriting omnikinverter with authentication-less instance…

… on "html" source type (#114)

This should have been an `elif`, now causing `source_type = "html"`
to fall into the `else` branch of the check for `"tcp"` and creating an
`OmnikInverter` instance without username and password.

custom_components/omnik_inverter/__init__.py

@@ -106,7 +106,7 @@ def __init__(
                 username=self.config_entry.data[CONF_USERNAME],
                 password=self.config_entry.data[CONF_PASSWORD],
             )
-        if self.config_entry.data[CONF_SOURCE_TYPE] == "tcp":
+        elif self.config_entry.data[CONF_SOURCE_TYPE] == "tcp":
             self.omnikinverter = OmnikInverter(
                 host=self.config_entry.data[CONF_HOST],
                 source_type=self.config_entry.data[CONF_SOURCE_TYPE],