Various pages: Use .nf/.fi in SYNOPSIS

Fix various pages missed in commit
c7db92b96a.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/chroot.2

@@ -34,9 +34,11 @@
 .SH NAME
 chroot \- change root directory
 .SH SYNOPSIS
+.nf
 .B #include <unistd.h>
 .PP
 .BI "int chroot(const char *" path );
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see

man2/getdomainname.2

@@ -30,11 +30,12 @@
 .SH NAME
 getdomainname, setdomainname \- get/set NIS domain name
 .SH SYNOPSIS
+.nf
 .B #include <unistd.h>
 .PP
 .BI "int getdomainname(char *" name ", size_t " len );
-.br
 .BI "int setdomainname(const char *" name ", size_t " len );
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see

man2/gethostname.2

@@ -33,11 +33,12 @@
 .SH NAME
 gethostname, sethostname \- get/set hostname
 .SH SYNOPSIS
+.nf
 .B #include <unistd.h>
 .PP
 .BI "int gethostname(char *" name ", size_t " len );
-.br
 .BI "int sethostname(const char *" name ", size_t " len );
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see

man2/getpagesize.2

@@ -26,9 +26,11 @@
 .SH NAME
 getpagesize \- get memory page size
 .SH SYNOPSIS
+.nf
 .B #include <unistd.h>
 .PP
 .B int getpagesize(void);
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see

man2/setpgid.2

@@ -49,21 +49,19 @@
 .SH NAME
 setpgid, getpgid, setpgrp, getpgrp \- set/get process group
 .SH SYNOPSIS
+.nf
 .B #include <sys/types.h>
-.br
 .B #include <unistd.h>
 .PP
 .BI "int setpgid(pid_t " pid ", pid_t " pgid );
-.br
 .BI "pid_t getpgid(pid_t " pid );
 .PP
 .BR "pid_t getpgrp(void);" "                 /* POSIX.1 version */"
-.br
 .BI "pid_t getpgrp(pid_t " pid ");\fR            /* BSD version */"
 .PP
 .BR "int setpgrp(void);" "                   /* System V version */"
-.br
 .BI "int setpgrp(pid_t " pid ", pid_t " pgid ");\fR  /* BSD version */"
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see

man2/vfork.2

@@ -30,11 +30,12 @@
 .SH NAME
 vfork \- create a child process and block parent
 .SH SYNOPSIS
+.nf
 .B #include <sys/types.h>
-.br
 .B #include <unistd.h>
 .PP
 .B pid_t vfork(void);
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see

man2/vhangup.2

@@ -29,9 +29,11 @@
 .SH NAME
 vhangup \- virtually hangup the current terminal
 .SH SYNOPSIS
+.nf
 .B #include <unistd.h>
 .PP
 .B int vhangup(void);
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see

man3/daemon.3

@@ -37,9 +37,11 @@
 .SH NAME
 daemon \- run in the background
 .SH SYNOPSIS
+.nf
 .B #include <unistd.h>
 .PP
 .BI "int daemon(int " nochdir ", int " noclose );
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see

man3/getdtablesize.3

@@ -28,9 +28,11 @@
 .SH NAME
 getdtablesize \- get file descriptor table size
 .SH SYNOPSIS
+.nf
 .B #include <unistd.h>
 .PP
 .B int getdtablesize(void);
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see

man3/gethostid.3

@@ -30,11 +30,12 @@
 .SH NAME
 gethostid, sethostid \- get or set the unique identifier of the current host
 .SH SYNOPSIS
+.nf
 .B #include <unistd.h>
 .PP
 .B long gethostid(void);
-.br
 .BI "int sethostid(long " hostid );
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see

man3/getlogin.3

@@ -29,15 +29,16 @@
 .SH NAME
 getlogin, getlogin_r, cuserid \- get username
 .SH SYNOPSIS
+.nf
 .B #include <unistd.h>
 .PP
 .B "char *getlogin(void);"
-.br
 .BI "int getlogin_r(char *" buf ", size_t " bufsize );
 .PP
 .B #include <stdio.h>
 .PP
 .BI "char *cuserid(char *" string );
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see

man3/getpass.3

@@ -25,9 +25,11 @@
 .SH NAME
 getpass \- get a password
 .SH SYNOPSIS
+.nf
 .B #include <unistd.h>
 .PP
 .BI "char *getpass(const char *" prompt );
+.fi
 .PP
 .RS -4
 Feature Test Macro Requirements for glibc (see