mmap() needs some includes

Add errno.h and sys/mman.h includes in buf.c for mmap().  The includes
were left out of 87750d1d ("Use mmap(MAP_ANONYMOUS) to allocate queue
buffers") by mistake.

Signed-off-by: Sebastien Dugue <sebastien.dugue@bull.net>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/buf.c b/src/buf.c
index bbaff12..a80bcb1 100644
--- a/src/buf.c
+++ b/src/buf.c
@@ -35,6 +35,8 @@
 #endif /* HAVE_CONFIG_H */
 
 #include <stdlib.h>
+#include <errno.h>
+#include <sys/mman.h>
 
 #include "mlx4.h"