Fixed runtime error on windows (-f option not defined)

src/main.rs

@@ -52,6 +52,8 @@ use unix_daemonize::{daemonize_redirect, ChdirMode};
 
 use core::ops::Deref;
 use errors::*;
+#[cfg(unix)]
+use getopts::Matches;
 use getopts::Options;
 use iron::prelude::*;
 use mount::Mount;
@@ -89,7 +91,10 @@ fn main() {
 }
 
  #[cfg(unix)]
-fn daemonize() -> Result<()> {
+fn daemonize(options : &getopts::Matches) -> Result<()> {
+	if options.opt_present("f") {
+		return Ok(());
+	}
 	let mut log_file = utils::get_data_root()?;
 	log_file.push("polaris.log");
 	match daemonize_redirect(Some(&log_file), Some(&log_file), ChdirMode::NoChdir) {
@@ -124,11 +129,8 @@ fn run() -> Result<()> {
 		return Ok(());
 	}
 
-	//attribute inside the if clause, because they are not yet allowed on `if` expressions
-	if !matches.opt_present("f") {
 	#[cfg(unix)]
-		daemonize()?;
-	}
+	daemonize(&matches)?;
 
 	// Init DB
 	println!("Starting up database");