Trivial cleanups in header files.

Print newline before message in signal handler.

AudioOutput.cc

@@ -22,11 +22,11 @@
 
 #define _FILE_OFFSET_BITS 64
 
-#include <string.h>
-#include <errno.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <cstdio>
+#include <cstring>
+#include <cerrno>
 #include <algorithm>
 
 #include <alsa/asoundlib.h>

AudioOutput.h

@@ -5,6 +5,7 @@
 #include <cstdio>
 #include <string>
 #include <vector>
+
 #include "SoftFM.h"
 
 

main.cc

@@ -200,7 +200,7 @@ static void handle_sigterm(int sig)
 {
     stop_flag.store(true);
 
-    string msg = "Got signal ";
+    string msg = "\nGot signal ";
     msg += strsignal(sig);
     msg += ", stopping ...\n";