Still ignore fuzz/src/lib.rs for now

Author: tnull

rustfmt_excluded_files

@@ -1,6 +1,7 @@
 ./bench/benches/bench.rs
 ./fuzz/src/chanmon_consistency.rs
 ./fuzz/src/full_stack.rs
+./fuzz/src/lib.rs
 ./lightning-background-processor/src/lib.rs
 ./lightning-block-sync/src/convert.rs
 ./lightning-block-sync/src/gossip.rs