Conditionalize inclusion of unistd.h

Windows doesn't have it, for instance.

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=38656
Reviewed-by: Will Thompson <will.thompson@collabora.co.uk>

diff --git a/bus/main.c b/bus/main.c
index 9f1bf11..13a3770 100644 (file)
--- a/bus/main.c
+++ b/bus/main.c
@@ -32,7 +32,9 @@
 #ifdef HAVE_SIGNAL_H
 #include <signal.h>
 #endif
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
+#endif
 #ifdef HAVE_ERRNO_H
 #include <errno.h>
 #endif