prefork: consistently use -1 for "don't print errno"

[chiark-utils.git] / cprogs / prefork.c

diff --git a/cprogs/prefork.c b/cprogs/prefork.c
index 25639418fa9685fceb4cd6972b8318dd0185084f..aaac059e1bb3a739d64957ebdf5bf9b3fa9ae4c6 100644 (file)
--- a/cprogs/prefork.c
+++ b/cprogs/prefork.c
@@ -19,7 +19,7 @@ void vmsgcore(int estatus, int errnoval, const char *fmt, va_list al) {
   if (logging) {
     const char *fmt_use = fmt;
     char *fmt_free = 0;
-    if (errnoval) {
+    if (errnoval!=-1) {
       r = asprintf(&fmt_free, "%s: %%m", fmt);
       if (r) {
        fmt_free = 0;