[PATCH cgi-io 03/12] Fix clang compiler errors

[Petr Štetiar]

Fixes following errors as reported by clang compilers:

 cgi-io/src/main.c:723:12: error: unused variable 'post' 
[-Werror,-Wunused-variable]
         autochar *post = postdecode(fields, 4);
                  ^
 cgi-io/src/main.c:814:12: error: unused variable 'post' 
[-Werror,-Wunused-variable]
         autochar *post = postdecode(fields, 1);
                  ^
 cgi-io/src/main.c:996:12: error: unused variable 'post' 
[-Werror,-Wunused-variable]
         autochar *post = postdecode(fields, 4);

Signed-off-by: Petr Štetiar <yn...@true.cz>
---
 main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/main.c b/main.c
index 64f474f9283d..53c672836294 100644
--- a/main.c
+++ b/main.c
@@ -721,6 +721,7 @@ main_download(int argc, char **argv)
        int rfd;
 
        autochar *post = postdecode(fields, 4);
+       (void) post;
 
        if (!fields[1] || !session_access(fields[1], "cgi-io", "download", 
"read"))
                return failure(403, 0, "Download permission denied");
@@ -812,6 +813,7 @@ main_backup(int argc, char **argv)
        char *fields[] = { "sessionid", NULL };
 
        autochar *post = postdecode(fields, 1);
+       (void) post;
 
        if (!fields[1] || !session_access(fields[1], "cgi-io", "backup", 
"read"))
                return failure(403, 0, "Backup permission denied");
@@ -999,6 +1001,7 @@ main_exec(int argc, char **argv)
        pid_t pid;
 
        autochar *post = postdecode(fields, 4);
+       (void) post;
 
        if (!fields[1] || !session_access(fields[1], "cgi-io", "exec", "read"))
                return failure(403, 0, "Exec permission denied");

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