filter: pipe_fh should be local

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

1 files changed, 7 insertions, 6 deletions

diff --git a/filter.c b/filter.c
index 949c931..70f5b74 100644
--- a/filter.c
+++ b/filter.c
@@ -42,6 +42,7 @@ void cgit_cleanup_filters(void)
 static int open_exec_filter(struct cgit_filter *base, va_list ap)
 {
         struct cgit_exec_filter *filter = (struct cgit_exec_filter *)base;
+        int pipe_fh[2];
         int i;
 
         for (i = 0; i < filter->base.argument_count; i++)
@@ -49,19 +50,19 @@ static int open_exec_filter(struct cgit_filter *base, va_list ap)
 
         filter->old_stdout = chk_positive(dup(STDOUT_FILENO),
                 "Unable to duplicate STDOUT");
-        chk_zero(pipe(filter->pipe_fh), "Unable to create pipe to subprocess");
+        chk_zero(pipe(pipe_fh), "Unable to create pipe to subprocess");
         filter->pid = chk_non_negative(fork(), "Unable to create subprocess");
         if (filter->pid == 0) {
-                close(filter->pipe_fh[1]);
-                chk_non_negative(dup2(filter->pipe_fh[0], STDIN_FILENO),
+                close(pipe_fh[1]);
+                chk_non_negative(dup2(pipe_fh[0], STDIN_FILENO),
                         "Unable to use pipe as STDIN");
                 execvp(filter->cmd, filter->argv);
                 die_errno("Unable to exec subprocess %s", filter->cmd);
         }
-        close(filter->pipe_fh[0]);
-        chk_non_negative(dup2(filter->pipe_fh[1], STDOUT_FILENO),
+        close(pipe_fh[0]);
+        chk_non_negative(dup2(pipe_fh[1], STDOUT_FILENO),
                 "Unable to use pipe as STDOUT");
-        close(filter->pipe_fh[1]);
+        close(pipe_fh[1]);
         return 0;
 }