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-rw-r--r--t/helper/test-delta.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/t/helper/test-delta.c b/t/helper/test-delta.c
index 59937dc1be..591730adc4 100644
--- a/t/helper/test-delta.c
+++ b/t/helper/test-delta.c
@@ -69,7 +69,7 @@ int cmd_main(int argc, const char **argv)
}
fd = open (argv[4], O_WRONLY|O_CREAT|O_TRUNC, 0666);
- if (fd < 0 || write_in_full(fd, out_buf, out_size) != out_size) {
+ if (fd < 0 || write_in_full(fd, out_buf, out_size) < 0) {
perror(argv[4]);
return 1;
}