Piotr Caban : services: Don't double release process in service_start.

[Alexandre Julliard]

Module: wine
Branch: stable
Commit: beeadfb055c17887b16bc38295f3fe735dd16193
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=beeadfb055c17887b16bc38295f3fe735dd16193

Author: Piotr Caban <piotr at codeweavers.com>
Date:   Mon May 27 17:36:17 2019 +0200

services: Don't double release process in service_start.

Fixes a crash while running ntoskrnl tests.

Signed-off-by: Piotr Caban <piotr at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
(cherry picked from commit 496380709dfdeccd2ff12358e5bdb5b7b8338ac2)
Signed-off-by: Michael Stefaniuc <mstefani at winehq.org>

---

 programs/services/services.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/programs/services/services.c b/programs/services/services.c
index 3de46bd200..8bb4567798 100644
--- a/programs/services/services.c
+++ b/programs/services/services.c
@@ -1066,10 +1066,13 @@ DWORD service_start(struct service_entry *service, DWORD service_argc, LPCWSTR *
         if (err != ERROR_SUCCESS)
         {
             service_lock(service);
-            service->status.dwCurrentState = SERVICE_STOPPED;
-            service->process = NULL;
-            if (!--process->use_count) process_terminate(process);
-            release_process(process);
+            if (service->process)
+            {
+                service->status.dwCurrentState = SERVICE_STOPPED;
+                service->process = NULL;
+                if (!--process->use_count) process_terminate(process);
+                release_process(process);
+            }
             service_unlock(service);
         }