Eliminate spurious warning, convert to getopt, and eliminate redundant check.

1 files changed, 3 insertions, 1 deletions

diff --git a/gunzip.c b/gunzip.c
index e6f6bdfc1..b4edb25ac 100644
--- a/gunzip.c
+++ b/gunzip.c
@@ -91,7 +91,7 @@ extern int gunzip_main(int argc, char **argv)
         if (strcmp(applet_name, "zcat") == 0)
                 flags |= gunzip_to_stdout;
 
-        while ((opt = getopt(argc, argv, "ctfh")) != -1) {
+        while ((opt = getopt(argc, argv, "ctfhd")) != -1) {
                 switch (opt) {
                 case 'c':
                         flags |= gunzip_to_stdout;
@@ -102,6 +102,8 @@ extern int gunzip_main(int argc, char **argv)
                 case 't':
                         flags |= gunzip_test;
                         break;
+                case 'd': /* Used to convert gzip to gunzip. */
+                        break;
                 case 'h':
                 default:
                         show_usage(); /* exit's inside usage */