efi_loadopt_args_from_file(): make sure buf is only NULL if size is.

This avoids passing NULL to fread().

Found by covscan.

Signed-off-by: Peter Jones <pjones@redhat.com>

diff --git a/src/loadopt.c b/src/loadopt.c
index 8db8074..5301f3d 100644 (file)
--- a/src/loadopt.c
+++ b/src/loadopt.c
@@ -269,7 +269,7 @@ efi_loadopt_args_from_file(uint8_t *buf, ssize_t size, char *filename)
        int saved_errno;
        FILE *f;
 
-       if (!buf && size > 0) {
+       if (!buf && size != 0) {
                errno = -EINVAL;
                return -1;
        }