Declare usage() as __dead on fstat(1), plus a few nitpicks

[Ricardo Mestre]

Declare usage() as __dead, and while here align a few variables to the rest of
the list and also ANSI one function. No functional change.

OK?

Index: fstat.c
===================================================================
RCS file: /cvs/src/usr.bin/fstat/fstat.c,v
retrieving revision 1.84
diff -u -p -u -r1.84 fstat.c
--- fstat.c     17 Nov 2015 17:17:24 -0000      1.84
+++ fstat.c     30 Dec 2015 18:35:29 -0000
@@ -96,10 +96,10 @@ int nflg;   /* (numerical) display f.s. an
 int    oflg;   /* display file offset */
 int    sflg;   /* display file xfer/bytes counters */
 int    vflg;   /* display errors in locating kernel data objects etc... */
-int    cflg;   /* fuser only */
+int    cflg;   /* fuser only */
 
-int    fuser;  /* 1 if we are fuser, 0 if we are fstat */
-int    signo;  /* signal to send (fuser only) */
+int    fuser;  /* 1 if we are fuser, 0 if we are fstat */
+int    signo;  /* signal to send (fuser only) */
 
 kvm_t *kd;
 uid_t uid;
@@ -107,7 +107,7 @@ uid_t uid;
 void fstat_dofile(struct kinfo_file *);
 void fstat_header(void);
 void getinetproto(int);
-void usage(void);
+__dead void usage(void);
 int getfname(char *);
 void kqueuetrans(struct kinfo_file *);
 void pipetrans(struct kinfo_file *);
@@ -827,8 +827,7 @@ socktrans(struct kinfo_file *kf)
  *     print name of protocol number
  */
 void
-getinetproto(number)
-       int number;
+getinetproto(int number)
 {
        static int isopen;
        struct protoent *pe;