simplify

Author: willmcgugan

src/textual/widgets/_tree.py

@@ -787,8 +787,7 @@ def get_guides(style: Style) -> tuple[str, str, str, str]:
             segments = line_pad(segments, 0, pad_width - guides.cell_len, line_style)
             self._line_cache[cache_key] = segments
 
-        segments = line_crop(segments, x1, x2, width)
-        segments = Segment.adjust_line_length(segments, width)
+        segments = line_crop(segments, x1, x2, Segment.get_line_length(segments))
 
         return segments