From 6bf64780e4b798f6f864c57a60ebc0e916d1f55e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Gardou?= <jerome.gardou@reactos.org>
Date: Thu, 17 Jun 2021 15:59:48 +0200
Subject: [PATCH] [NET] Properly check return value of EnumServicesStatusW on
 first call

---
 base/applications/network/net/cmdStart.c | 25 ++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/base/applications/network/net/cmdStart.c b/base/applications/network/net/cmdStart.c
index 50029b129d9..1ae2d09b8c2 100644
--- a/base/applications/network/net/cmdStart.c
+++ b/base/applications/network/net/cmdStart.c
@@ -23,6 +23,7 @@ EnumerateRunningServices(VOID)
     INT i;
     INT nError = 0;
     DWORD dwError = ERROR_SUCCESS;
+    BOOL ret;
 
     hManager = OpenSCManagerW(NULL,
                               SERVICES_ACTIVE_DATABASE,
@@ -34,14 +35,22 @@ EnumerateRunningServices(VOID)
         goto done;
     }
 
-    EnumServicesStatusW(hManager,
-                        SERVICE_WIN32,
-                        SERVICE_ACTIVE,
-                        NULL,
-                        0,
-                        &dwBufferSize,
-                        &dwServiceCount,
-                        &dwResumeHandle);
+    ret = EnumServicesStatusW(hManager,
+                              SERVICE_WIN32,
+                              SERVICE_ACTIVE,
+                              NULL,
+                              0,
+                              &dwBufferSize,
+                              &dwServiceCount,
+                              &dwResumeHandle);
+    if (ret)
+    {
+        /* Nothing to enumerate ?! */
+        goto done;
+    }
+    dwError = GetLastError();
+    if (dwError != ERROR_INSUFFICIENT_BUFFER)
+        goto done;
 
     if (dwBufferSize != 0)
     {