Remove three NULL-checks before free(). ok millert@

src/lib/libutil/imsg.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: imsg.c,v 1.10 2015/07/19 07:18:59 nicm Exp $	*/
+/*	$OpenBSD: imsg.c,v 1.11 2015/11/27 01:57:59 mmcc Exp $	*/
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -118,8 +118,7 @@ again:
 	}
 
 fail:
-	if (ifd)
-		free(ifd);
+	free(ifd);
 	return (n);
 }
 

src/lib/libutil/login_fbtab.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: login_fbtab.c,v 1.15 2015/08/20 21:34:04 deraadt Exp $	*/
+/*	$OpenBSD: login_fbtab.c,v 1.16 2015/11/27 01:57:59 mmcc Exp $	*/
 
 /************************************************************************
 * Copyright 1995 by Wietse Venema.  All rights reserved.  Some individual
@@ -124,8 +124,7 @@ login_fbtab(const char *tty, uid_t uid, gid_t gid)
 				login_protect(cp, prot, uid, gid);
 		}
 	}
-	if (tbuf != NULL)
-		free(tbuf);
+	free(tbuf);
 	fclose(fp);
 }
 

src/lib/libutil/pidfile.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: pidfile.c,v 1.11 2015/06/03 02:24:36 millert Exp $	*/
+/*	$OpenBSD: pidfile.c,v 1.12 2015/11/27 01:57:59 mmcc Exp $	*/
 /*	$NetBSD: pidfile.c,v 1.4 2001/02/19 22:43:42 cgd Exp $	*/
 
 /*-
@@ -55,10 +55,8 @@ pidfile(const char *basename)
 	if (basename == NULL)
 		basename = __progname;
 
-	if (pidfile_path != NULL) {
-		free(pidfile_path);
-		pidfile_path = NULL;
-	}
+	free(pidfile_path);
+	pidfile_path = NULL;
 
 	/* _PATH_VARRUN includes trailing / */
 	if (asprintf(&pidfile_path, "%s%s.pid", _PATH_VARRUN, basename) == -1)