Put the setsid() where it belongs

src/frontend/mosh-server.cc

@@ -337,6 +337,10 @@ int run_server( const char *desired_ip, const char *desired_port,
     _exit( 0 );
   }
 
+  if ( setsid() < 0 ) {
+    perror( "setsid" );
+  }
+
   fprintf( stderr, "\nmosh-server (%s)\n", PACKAGE_STRING );
   fprintf( stderr, "Copyright 2012 Keith Winstein <mosh-devel@mit.edu>\n" );
   fprintf( stderr, "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law.\n\n" );
@@ -374,8 +378,6 @@ int run_server( const char *desired_ip, const char *desired_port,
   if ( child == 0 ) {
     /* child */
 
-    setsid(); /* may fail */
-
     /* reopen stdio */
     stdin = fdopen( STDIN_FILENO, "r" );
     stdout = fdopen( STDOUT_FILENO, "w" );