journal: assert gcry_mpi_scan succeeded

It might be nicer to propagate the error to the caller, but that'd
be a bigger refactoring. This shouldn't really fail, so just add
an assert.

CID #1349697.

diff --git a/src/journal/fsprg.c b/src/journal/fsprg.c
index 8956eb1d58a572d0a37dd60de3cdefba204d9cfc..612b10f3a9afea1d90614b825680cf6b32052a61 100644 (file)
--- a/src/journal/fsprg.c
+++ b/src/journal/fsprg.c
@@ -58,7 +58,7 @@ static gcry_mpi_t mpi_import(const void *buf, size_t buflen) {
         gcry_mpi_t h;
         unsigned len;
 
-        gcry_mpi_scan(&h, GCRYMPI_FMT_USG, buf, buflen, NULL);
+        assert_se(gcry_mpi_scan(&h, GCRYMPI_FMT_USG, buf, buflen, NULL) == 0);
         len = (gcry_mpi_get_nbits(h) + 7) / 8;
         assert(len <= buflen);
         assert(gcry_mpi_cmp_ui(h, 0) >= 0);