filter: make exit status local

It's only used in one place, and not useful to have around since
close_filter will die() if exit_status isn't what it expects, anyway. So
this is best as just a local variable instead of as part of the struct.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/shared.c b/shared.c
index 01197f1..6259d75 100644
--- a/shared.c
+++ b/shared.c
@@ -459,7 +459,6 @@ void cgit_prepare_repo_env(struct cgit_repo * repo)
 
 int cgit_open_filter(struct cgit_filter *filter)
 {
-
         filter->old_stdout = chk_positive(dup(STDOUT_FILENO),
                 "Unable to duplicate STDOUT");
         chk_zero(pipe(filter->pipe_fh), "Unable to create pipe to subprocess");
@@ -480,13 +479,15 @@ int cgit_open_filter(struct cgit_filter *filter)
 
 int cgit_close_filter(struct cgit_filter *filter)
 {
+        int exit_status;
+
         chk_non_negative(dup2(filter->old_stdout, STDOUT_FILENO),
                 "Unable to restore STDOUT");
         close(filter->old_stdout);
         if (filter->pid < 0)
                 return 0;
-        waitpid(filter->pid, &filter->exitstatus, 0);
-        if (WIFEXITED(filter->exitstatus) && !WEXITSTATUS(filter->exitstatus))
+        waitpid(filter->pid, &exit_status, 0);
+        if (WIFEXITED(exit_status) && !WEXITSTATUS(exit_status))
                 return 0;
         die("Subprocess %s exited abnormally", filter->cmd);
 }