Alexandre Julliard : ntdll: Ignore the preload start address if it is zero.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0374d86c571724b7100308047653d8b300072afb
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=0374d86c571724b7100308047653d8b300072afb

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Mon Oct  9 10:44:29 2017 +0200

ntdll: Ignore the preload start address if it is zero.

Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/ntdll/virtual.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dlls/ntdll/virtual.c b/dlls/ntdll/virtual.c
index 7bb4eb4..1b835bc 100644
--- a/dlls/ntdll/virtual.c
+++ b/dlls/ntdll/virtual.c
@@ -1597,7 +1597,8 @@ void virtual_init(void)
             preload_reserve_start = (void *)start;
             preload_reserve_end = (void *)end;
             /* some apps start inside the DOS area */
-            address_space_start = min( address_space_start, preload_reserve_start );
+            if (preload_reserve_start)
+                address_space_start = min( address_space_start, preload_reserve_start );
         }
     }