fixup: do not assign immediately before reassigning

Minor cleanup from cppcheck to not assign before immediately
re-assigning.

[src/pam_ipmisave/pam_ipmisave.c:243] ->
[src/pam_ipmisave/pam_ipmisave.c:245]: (style)
Variable 'fd' is reassigned a value before the old
one has been used.

Change-Id: I3d995e561973bc37cef633232016c6e6340ea814
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/src/pam_ipmisave/pam_ipmisave.c b/src/pam_ipmisave/pam_ipmisave.c
index 3b14e09..6617627 100644
--- a/src/pam_ipmisave/pam_ipmisave.c
+++ b/src/pam_ipmisave/pam_ipmisave.c
@@ -240,7 +240,7 @@
 FILE *get_temp_file_handle(const pam_handle_t *pamh, char *const tempfilename)
 {
 	FILE *tempfile = NULL;
-	int fd = -1;
+	int fd;
 	int oldmask = umask(077);
 	fd = mkstemp(tempfilename);
 	if (fd == -1) {