*: fix clang-6 SA warnings

I don't see these in CI, but my local clang-6 does emit warnings for
these.

Signed-off-by: David Lamparter <equinox@diac24.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/csv.c b/lib/csv.c
index ce84783aa..2752974df 100644
--- a/lib/csv.c
+++ b/lib/csv.c
@@ -563,6 +563,8 @@ void csv_decode(csv_t *csv, char *inbuf)
 	csv_record_t *rec;
 
 	buf = (inbuf) ? inbuf : csv->buf;
+	assert(buf);
+
 	pos = strpbrk(buf, "\n");
 	while (pos != NULL) {
 		rec = calloc(1, sizeof(csv_record_t));