- convert a few xopen3(,,0) into xopen(,). Also peruse the fact that xopen defaults to 0777 on it's own, so we don't need to xopen3(,,0777).

  Saves a few bytes:
$ size busybox.old busybox                                text    data     bss     dec     hex filename
 839676    8780  243592 1092048  10a9d0 busybox.old
 839660    8780  243592 1092032  10a9c0 busybox
$ make CC=gcc-4.2-HEAD bloatcheck
function                                             old     new   delta
static.vconfig_main                                  281     279      -2
static.rx_main                                      1076    1074      -2
static.mt_main                                       294     292      -2
static.gzip_main                                     753     751      -2
static.mkfs_minix_main                              4034    4030      -4
static.unzip_main                                   1771    1766      -5
static.crontab_main                                 1513    1507      -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/7 up/down: 0/-23)             Total: -23 bytes

2 files changed, 2 insertions, 2 deletions

diff --git a/archival/gzip.c b/archival/gzip.c
index ad2c24df1..7c18154ff 100644
--- a/archival/gzip.c
+++ b/archival/gzip.c
@@ -1206,7 +1206,7 @@ int gzip_main(int argc, char **argv)
                                 inFileNum = STDIN_FILENO;
                                 outFileNum = STDOUT_FILENO;
                         } else {
-                                inFileNum = xopen3(argv[i], O_RDONLY, 0);
+                                inFileNum = xopen(argv[i], O_RDONLY);
                                 if (fstat(inFileNum, &statBuf) < 0)
                                         bb_perror_msg_and_die("%s", argv[i]);
                                 time_stamp = statBuf.st_ctime;
diff --git a/archival/unzip.c b/archival/unzip.c
index 709ebf81a..1b80aea9f 100644
--- a/archival/unzip.c
+++ b/archival/unzip.c
@@ -333,7 +333,7 @@ int unzip_main(int argc, char **argv)
                         overwrite = o_always;
                 case 'y': /* Open file and fall into unzip */
                         unzip_create_leading_dirs(dst_fn);
-                        dst_fd = xopen3(dst_fn, O_WRONLY | O_CREAT | O_TRUNC, 0777);
+                        dst_fd = xopen(dst_fn, O_WRONLY | O_CREAT | O_TRUNC);
                 case -1: /* Unzip */
                         if (verbosity == v_normal) {
                                 printf("  inflating: %s\n", dst_fn);