- use STD*_FILENO some more. No object-code changes

libbb/appletlib.c

@@ -98,7 +98,7 @@ static const char *unpack_usage_messages(void)
 
 static void full_write2_str(const char *str)
 {
-	full_write(2, str, strlen(str));
+	full_write(STDERR_FILENO, str, strlen(str));
 }
 
 void bb_show_usage(void)

libbb/verror_msg.c

@@ -56,7 +56,7 @@ void bb_verror_msg(const char *s, va_list p, const char* strerr)
 
 	if (logmode & LOGMODE_STDIO) {
 		fflush(stdout);
-		full_write(2, msg, used + msgeol_len);
+		full_write(STDERR_FILENO, msg, used + msgeol_len);
 	}
 	if (logmode & LOGMODE_SYSLOG) {
 		syslog(LOG_ERR, "%s", msg + applet_len);