tree-wide: use -EBADF for fd initialization

-1 was used everywhere, but -EBADF or -EBADFD started being used in various
places. Let's make things consistent in the new style.

Note that there are two candidates:
EBADF 9 Bad file descriptor
EBADFD 77 File descriptor in bad state

Since we're initializating the fd, we're just assigning a value that means
"no fd yet", so it's just a bad file descriptor, and the first errno fits
better. If instead we had a valid file descriptor that became invalid because
of some operation or state change, the other errno would fit better.

In some places, initialization is dropped if unnecessary.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/creds/creds.c b/src/creds/creds.c
index 3c86b10aab..d987f04ef4 100644
--- a/src/creds/creds.c
+++ b/src/creds/creds.c
@@ -137,7 +137,7 @@ static int add_credentials_to_table(Table *t, bool encrypted) {
         for (;;) {
                 _cleanup_free_ char *j = NULL;
                 const char *secure, *secure_color = NULL;
-                _cleanup_close_ int fd = -1;
+                _cleanup_close_ int fd = -EBADF;
                 struct dirent *de;
                 struct stat st;