waybar: Change calendar block whitespace

When there are no new calendar events for the current day we do not
display any whitespace after the icon.

desktop/.config/waybar/modules/khal.py

@@ -1,10 +1,14 @@
 #!/usr/bin/env python
 # from https://gist.github.com/bjesus/178a9bd3453470d74803945dbbf9ed40
 # List upcoming khal events in simple json container fit for waybar
+#
+# Hovering over the item displays all upcoming
+# The icon changes if there are events today, and displays the
+# closest upcoming one.
 
-import subprocess
 import datetime
 import json
+import subprocess
 from html import escape
 
 data = {}
@@ -17,10 +21,10 @@ output = subprocess.check_output("khal list now " + next_week, shell=True)
 output = output.decode("utf-8")
 
 lines = output.split("\n")
-new_lines = []
+new_lines: list[str] = []
 for line in lines:
     clean_line = escape(line).split(" ::")[0]
-    if len(clean_line) and not clean_line[0] in ["0", "1", "2"]:
+    if len(clean_line) and clean_line[0] not in ["0", "1", "2"]:
         clean_line = "\n<b>" + clean_line + "</b>"
     new_lines.append(clean_line)
 output = "\n".join(new_lines).strip()