[PATCH] ntdll: Include <signal.h> where needed in the Unix library.

[Gerald Pfeifer]

After

Author: Alexandre Julliard 
    Date:   Fri Jun 12 09:26:50 2020 +0200

ntdll: Move fork and exec support to the Unix library.

the build fails when declarations/definitions for signal(), SIGPIPE, 
and SIG_DFL are not pulled in implicitly.

Make sure we always declare/define those by including <signal.h>.

Signed-off-by: Gerald Pfeifer 
---
 dlls/ntdll/unix/process.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dlls/ntdll/unix/process.c b/dlls/ntdll/unix/process.c
index 9f38f042de..58ba031421 100644
--- a/dlls/ntdll/unix/process.c
+++ b/dlls/ntdll/unix/process.c
@@ -28,6 +28,7 @@

#include <errno.h>
 #include <fcntl.h>
+#include <signal.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>