72 _tx_error needs to preserve the errno value it is supposed to display

@@ -24,14 +24,13 @@
 /*        All Rights Reserved   */
 
 /*
  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
+ * Copyright (c) 2012 Gary Mills
  */
 
-#pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.2 */
-
 #include "mt.h"
 #include <xti.h>
 #include <errno.h>
 #include <unistd.h>
 #include <stdio.h>

@@ -40,23 +39,21 @@
 /* ARGSUSED1 */
 int
 _tx_error(const char *s, int api_semantics)
 {
         const char *c;
-        int n;
+        int errnum = errno;     /* In case a system call fails. */
 
         c = t_strerror(t_errno);
         if (s != NULL && *s != '\0') {
-                n = strlen(s);
-                if (n) {
-                        (void) write(2, s, (unsigned)n);
+                (void) write(2, s, (unsigned)strlen(s));
                         (void) write(2, ": ", 2);
                 }
-        }
         (void) write(2, c, (unsigned)strlen(c));
         if (t_errno == TSYSERR) {
+                c = strerror(errnum);
                 (void) write(2, ": ", 2);
-                perror("");
-        } else
+                (void) write(2, c, (unsigned)strlen(c));
+        }
                 (void) write(2, "\n", 1);
         return (0);
 }