Changes for Linux without fork feature (#814)

* Minor changes for linux without fork feature

* cargo fmt

libafl/src/bolts/launcher.rs

@@ -264,6 +264,7 @@ where
                 // I am a broker
                 // before going to the broker loop, spawn n clients
 
+                #[cfg(windows)]
                 if self.stdout_file.is_some() {
                     println!("Child process file stdio is not supported on Windows yet. Dumping to stdout instead...");
                 }

libafl_qemu/src/executor.rs

@@ -1,10 +1,12 @@
 //! A `QEMU`-based executor for binary-only instrumentation in `LibAFL`
 use core::fmt::{self, Debug, Formatter};
 
+#[cfg(feature = "fork")]
+use libafl::bolts::shmem::ShMemProvider;
 #[cfg(feature = "fork")]
 use libafl::executors::InProcessForkExecutor;
+
 use libafl::{
-    bolts::shmem::ShMemProvider,
     events::{EventFirer, EventRestarter},
     executors::{Executor, ExitKind, HasObservers, InProcessExecutor},
     feedbacks::Feedback,