regress: Constify FR_write

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/regress/hplayback.c.m4 b/regress/hplayback.c.m4
index 029946a488fd11ec8aff99259316d2317a9394d6..26660d07eb967f9bde87fbc3ac1c54d09b2e60d3 100644 (file)
--- a/regress/hplayback.c.m4
+++ b/regress/hplayback.c.m4
@@ -70,7 +70,7 @@ static void Tensurefuzzrawfile(void) {
   if (!Tfuzzrawfile) Tfailed("fdopen ADNS_TEST_FUZZRAW_DUMP_FD");
 }
 
-static void FR_write(void *p, size_t sz) {
+static void FR_write(const void *p, size_t sz) {
   if (!Tfuzzrawfile) return;
   ssize_t got = fwrite(p,1,sz,Tfuzzrawfile);
   if (ferror(Tfuzzrawfile)) Tfailed("write fuzzraw output file");