Bug 1801836 - Fix black linting opt failure on memory/replace/dmd/dmd.py. a=lint-fix

memory/replace/dmd/dmd.py

@@ -637,7 +637,10 @@ def printDigest(args, digest):
                 cond = is_match
             elif arg.startswith("!"):
                 key = arg[1:]
-                def cond(rec, key): return not is_match(rec, key)  # noqa: E731
+
+                def cond(rec, key):
+                    return not is_match(rec, key)  # noqa: E731
+
             else:
                 key = arg
                 cond = is_match