Handle # fmt: skip followed by a comment (#4635)

CHANGES.md

@@ -12,6 +12,7 @@
 - Fix crash while formatting a long `del` statement containing tuples (#4628)
 - Fix crash while formatting expressions using the walrus operator in complex
   `with` statements (#4630)
+- Handle `# fmt: skip` followed by a comment at the end of file (#4635)
 
 ### Preview style
 

src/black/comments.py

@@ -321,7 +321,7 @@ def _generate_ignored_nodes_from_fmt_skip(
     if not comments or comment.value != comments[0].value:
         return
     if prev_sibling is not None:
-        leaf.prefix = ""
+        leaf.prefix = leaf.prefix[comment.consumed :]
 
         if Preview.fix_fmt_skip_in_one_liners not in mode:
             siblings = [prev_sibling]

tests/data/cases/fmtskip11.py

@@ -0,0 +1,6 @@
+def foo():
+    pass
+
+
+# comment 1  # fmt: skip
+# comment 2