Fix incorrect doc mentions of INADDR_LOCALHOST

Thanks to Scott McPeak for reporting this.

* doc/ref/posix.texi (Network Sockets and Communication): Change
  INADDR_LOCALHOST to INADDR_LOOPBACK.

THANKS

@@ -72,6 +72,7 @@ For fixes or providing information which led to a fix:
         Antoine Mathys
             Dan McMahill
           Roger Mc Murtrie
+          Scott McPeak
             Tim Mooney
         Han-Wen Nienhuys
             Jan Nieuwenhuizen

doc/ref/posix.texi

@@ -2882,8 +2882,8 @@ same as @code{make-socket-address} would take to make such an object
 (@pxref{Network Socket Address}).  The return value is unspecified.
 
 @example
-(connect sock AF_INET INADDR_LOCALHOST 23)
-(connect sock (make-socket-address AF_INET INADDR_LOCALHOST 23))
+(connect sock AF_INET INADDR_LOOPBACK 23)
+(connect sock (make-socket-address AF_INET INADDR_LOOPBACK 23))
 @end example
 @end deffn