Assume SIGTSTP is defined

It is required by POSIX.1-2001.

Cc: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>

libmisc/loginprompt.c

@@ -42,21 +42,16 @@ void login_prompt (const char *prompt, char *name, int namesize)
 	FILE *fp;
 
 	sighandler_t sigquit;
-#ifdef	SIGTSTP
 	sighandler_t sigtstp;
-#endif
 
 	/*
 	 * There is a small chance that a QUIT character will be part of
 	 * some random noise during a prompt.  Deal with this by exiting
-	 * instead of core dumping.  If SIGTSTP is defined, do the same
-	 * thing for that signal.
+	 * instead of core dumping.  Do the same thing for SIGTSTP.
 	 */
 
 	sigquit = signal (SIGQUIT, login_exit);
-#ifdef	SIGTSTP
 	sigtstp = signal (SIGTSTP, login_exit);
-#endif
 
 	/*
 	 * See if the user has configured the issue file to
@@ -148,8 +143,6 @@ void login_prompt (const char *prompt, char *name, int namesize)
 	 */
 
 	(void) signal (SIGQUIT, sigquit);
-#ifdef	SIGTSTP
 	(void) signal (SIGTSTP, sigtstp);
-#endif
 }
 

libmisc/pwd_init.c

@@ -49,9 +49,7 @@ void pwd_init (void)
 	signal (SIGPIPE, SIG_IGN);
 	signal (SIGQUIT, SIG_IGN);
 	signal (SIGTERM, SIG_IGN);
-#ifdef SIGTSTP
 	signal (SIGTSTP, SIG_IGN);
-#endif
 #ifdef SIGTTOU
 	signal (SIGTTOU, SIG_IGN);
 #endif

src/expiry.c

@@ -133,9 +133,7 @@ int main (int argc, char **argv)
 	(void) signal (SIGHUP, catch_signals);
 	(void) signal (SIGINT, catch_signals);
 	(void) signal (SIGQUIT, catch_signals);
-#ifdef	SIGTSTP
 	(void) signal (SIGTSTP, catch_signals);
-#endif
 
 	/*
 	 * expiry takes one of two arguments. The default action is to give

src/gpasswd.c

@@ -1145,9 +1145,7 @@ int main (int argc, char **argv)
 	(void) signal (SIGINT, catch_signals);
 	(void) signal (SIGQUIT, catch_signals);
 	(void) signal (SIGTERM, catch_signals);
-#ifdef SIGTSTP
 	(void) signal (SIGTSTP, catch_signals);
-#endif
 
 	/* Prompt for the new password */
 #ifdef SHADOWGRP