Mesa (master): util/os_socket: Include unistd.h to fix build error

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Module: Mesa
Branch: master
Commit: e62c3cf350a8b169e6401d5f1e1f17388cdc4b77
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=e62c3cf350a8b169e6401d5f1e1f17388cdc4b77

Author: Bernd Kuhls <bernd.kuhls at t-online.de>
Date:   Fri Jan 31 18:48:06 2020 +0100

util/os_socket: Include unistd.h to fix build error

Fixes

In file included from ../src/util/os_socket.c:8:
../src/util/os_socket.h:26:1: error: unknown type name ‘ssize_t’; did you mean ‘size_t’?
 ssize_t os_socket_recv(int socket, void *buffer, size_t length, int flags);

seen with gcc version 8.3.0 (Buildroot 2019.11) and uClibc 1.0.32.

Reviewed-by: Eric Engestrom <eric at engestrom.ch>
Fixes: ef5266ebd50e7fa65c56 ("util/os_socket: Add socket related functions.")
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3659>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3659>

---

 src/util/os_socket.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/util/os_socket.h b/src/util/os_socket.h
index 0d6f8749176..db0dc905a2b 100644
--- a/src/util/os_socket.h
+++ b/src/util/os_socket.h
@@ -10,6 +10,7 @@
 
 #include <stdio.h>
 #include <stdbool.h>
+#include <unistd.h>
 #ifdef _MSC_VER
 #include <BaseTsd.h>
 typedef SSIZE_T ssize_t;