don't dereference NULL upon fdopen failure
There were several unchecked use of fdopen(); replace them with xfdopen()
that checks and dies.
Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin-add.c b/builtin-add.c
index a571473..cb6e590 100644
--- a/builtin-add.c
+++ b/builtin-add.c
@@ -198,7 +198,7 @@
out = open(file, O_CREAT | O_WRONLY, 0644);
if (out < 0)
die ("Could not open '%s' for writing.", file);
- rev.diffopt.file = fdopen(out, "w");
+ rev.diffopt.file = xfdopen(out, "w");
rev.diffopt.close_file = 1;
if (run_diff_files(&rev, 0))
die ("Could not write patch");
