Add NONULL to debug statement in fold_one_header().

diff --git a/sendlib.c b/sendlib.c
index d09b8ce068585c682321fd926a91fdc88170c694..880b85468309bc1fe90b92f7577bd251a3889314 100644 (file)
--- a/sendlib.c
+++ b/sendlib.c
@@ -1684,7 +1684,7 @@ static int fold_one_header (FILE *fp, const char *tag, const char *value,
   int first = 1, enc, col = 0, w, l = 0, fold;
 
   dprint(4,(debugfile,"mwoh: pfx=[%s], tag=[%s], flags=%d value=[%s]\n",
-           pfx, tag, flags, value));
+           NONULL (pfx), tag, flags, value));
 
   if (tag && *tag && fprintf (fp, "%s%s: ", NONULL (pfx), tag) < 0)
     return -1;