Fix start index for multiline precomments

utils/tree_utils.py

@@ -94,7 +94,8 @@ def grab_before_comments(func_node):
         if node.start_point[0] != last_comment_line + 1:
             precomment = ""
         if node.type == "comment":
-            start_byte = node.start_byte # reset this here to an earlier one?
+            if precomment == "":
+                start_byte = node.start_byte
             precomment += node.text.decode() + "\n"
             last_comment_line = node.start_point[0]
         elif node == func_node: