Revert fuzzbench changes (#927)

Author: tokatoka

fuzzers/fuzzbench/src/lib.rs

@@ -390,8 +390,8 @@ fn fuzz(
     #[cfg(unix)]
     {
         let null_fd = file_null.as_raw_fd();
-        // dup2(null_fd, io::stdout().as_raw_fd())?;
-        // dup2(null_fd, io::stderr().as_raw_fd())?;
+        dup2(null_fd, io::stdout().as_raw_fd())?;
+        dup2(null_fd, io::stderr().as_raw_fd())?;
     }
     // reopen file to make sure we're at the end
     log.replace(

libafl/src/events/simple.rs

@@ -445,7 +445,7 @@ where
         // We start ourself as child process to actually fuzz
         let mut staterestorer = if std::env::var(_ENV_FUZZER_SENDER).is_err() {
             // First, create a place to store state in, for restarts.
-            let mut staterestorer: StateRestorer<SP> =
+            let staterestorer: StateRestorer<SP> =
                 StateRestorer::new(shmem_provider.new_shmem(256 * 1024 * 1024)?);
             //let staterestorer = { LlmpSender::new(shmem_provider.clone(), 0, false)? };
             staterestorer.write_to_env(_ENV_FUZZER_SENDER)?;