Avoid compiler warning on some OS

Some OS declare arc4random() with __attribute__((warn_unused_result))
causing this test to whine. So explicitly ignore the return value.

Reported by scheiba in libressl/portable
Fixes #1151

1 files changed, 1 insertions, 1 deletions

diff --git a/src/regress/lib/libc/arc4random-fork/arc4random-fork.c b/src/regress/lib/libc/arc4random-fork/arc4random-fork.c
index 4bc9c634f1..9b334945af 100644
--- a/src/regress/lib/libc/arc4random-fork/arc4random-fork.c
+++ b/src/regress/lib/libc/arc4random-fork/arc4random-fork.c
@@ -111,7 +111,7 @@ main(int argc, char *argv[])
         }
 
         if (flagprefork)
-                arc4random();
+                (void)arc4random();
 
         bufparent = mmap(NULL, sizeof(Buf), PROT_READ|PROT_WRITE,
             MAP_ANON|MAP_PRIVATE, -1, 0);