src/sulogin.c: Remove 'static' from local variable, but keep initialization

We don't need 'static', because it's in main(), which is only called
once.  However, we will need initialization as if it were 'static', so
use ={} to initialize it.  This will allow freeing the pointers before
they have been allocated.

Cc: Samanta Navarro <ferivoz@riseup.net>
Suggested-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>

src/sulogin.c

@@ -55,17 +55,19 @@ static void catch_signals (unused int sig)
 	_exit (1);
 }
 
-/*ARGSUSED*/ int main (int argc, char **argv)
+
+/*ARGSUSED*/ int
+main(int argc, char **argv)
 {
 	int            err = 0;
 	char           pass[BUFSIZ];
 	char           **envp = environ;
 	TERMIO         termio;
+	struct passwd  pwent = {};
 #ifndef USE_PAM
 	const char     *env;
 #endif
 
-	static struct passwd  pwent;
 
 	tcgetattr (0, &termio);
 	termio.c_iflag |= (ICRNL | IXON);