[PATCH] winlocks: Include stdlib.h to avoid crash in Windows

[Chris Townsend <Christopher.Townsend@xxxxxxxxxxxxx>]

Due to the missing include, the compiler makes assumptions and leads to
a crash in ssh_mutex_lock() during runtime.

Signed-off-by: Chris Townsend <christopher.townsend@xxxxxxxxxxxxx>
---
 src/threads/winlocks.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/threads/winlocks.c b/src/threads/winlocks.c
index a1799531..da600418 100644
--- a/src/threads/winlocks.c
+++ b/src/threads/winlocks.c
@@ -26,6 +26,7 @@
 #include <windows.h>
 #include <winbase.h>
 #include <errno.h>
+#include <stdlib.h>
 
 static int ssh_winlock_mutex_init (void **priv)
 {