[PATCH gwhttpd 2/2] gwhttpd: Fix `EBADF` errors at destruction

[Ammar Faizi <ammarfaizi2@gnuweeb.org>]

When Yonle reported an issue about error on bind(), he attached an
strace output and it has many EBADF errors like this:

  close(0) = 0
  close(0) = -1 EBADF (Bad file descriptor)
  close(0) = -1 EBADF (Bad file descriptor)
  close(0) = -1 EBADF (Bad file descriptor)
  close(0) = -1 EBADF (Bad file descriptor)
  close(0) = -1 EBADF (Bad file descriptor)
  ...

This happens because all sess[i].fd is set to 0 at initialization while
the destructor is supposed to close the file descriptor when it's not
equal to -1. Fix this by setting all file descriptor fields to -1 at
initialization.

Link: https://github.com/ammarfaizi2/gwhttpd/issues/1
Reported-by: Yonle <yonle@gnuweeb.org>
Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
---
 gwhttpd.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gwhttpd.cpp b/gwhttpd.cpp
index d038939..0f4261d 100644
--- a/gwhttpd.cpp
+++ b/gwhttpd.cpp
@@ -111,6 +111,7 @@ static int init_state(struct server_state *state)
 	}
 
 	for (i = NR_MAX_CLIENTS - 1; i--; ) {
+		state->sess[i].fd = -1;
 		state->sess[i].idx = i;
 		state->sess_free_idx->push(i);
 	}
-- 
Ammar Faizi