[PATCH] netprofm: Initialize ret value in IEnumNetworkConnections_Next().

[Jactry Zeng]

Signed-off-by: Jactry Zeng <jzeng(a)codeweavers.com>

---
Fixes a hang of Futu Securities.
---
 dlls/netprofm/list.c       |  2 ++
 dlls/netprofm/tests/list.c | 20 +++++++++++++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/dlls/netprofm/list.c b/dlls/netprofm/list.c
index def2aa6cf67..72a594a81d5 100644
--- a/dlls/netprofm/list.c
+++ b/dlls/netprofm/list.c
@@ -1000,6 +1000,8 @@ static HRESULT WINAPI connections_enum_Next(
 
     TRACE( "%p, %u %p %p\n", iter, count, ret, fetched );
 
+    if (!ret) return E_POINTER;
+    *ret = NULL;
     if (fetched) *fetched = 0;
     if (!count) return S_OK;
 
diff --git a/dlls/netprofm/tests/list.c b/dlls/netprofm/tests/list.c
index 0a1f854c00b..87eb857426b 100644
--- a/dlls/netprofm/tests/list.c
+++ b/dlls/netprofm/tests/list.c
@@ -229,7 +229,7 @@ static void test_INetworkListManager( void )
     INetworkConnection *conn;
     DWORD cookie;
     HRESULT hr;
-    ULONG ref1, ref2;
+    ULONG ref1, ref2, fetched;
     IID iid;
 
     hr = CoCreateInstance( &CLSID_NetworkListManager, NULL, CLSCTX_INPROC_SERVER,
@@ -351,11 +351,29 @@ static void test_INetworkListManager( void )
     ok( hr == S_OK, "got %08x\n", hr );
     if (conn_iter)
     {
+        fetched = 256;
+        hr = IEnumNetworkConnections_Next( conn_iter, 1, NULL, &fetched );
+        ok( hr == E_POINTER, "got hr %#x.\n", hr );
+        ok( fetched == 256, "got wrong feteched: %d.\n", fetched );
+
+        hr = IEnumNetworkConnections_Next( conn_iter, 0, NULL, &fetched );
+        ok( hr == E_POINTER, "got hr %#x.\n", hr );
+        ok( fetched == 256, "got wrong feteched: %d.\n", fetched );
+
         while ((hr = IEnumNetworkConnections_Next( conn_iter, 1, &conn, NULL )) == S_OK)
         {
             test_INetworkConnection( conn );
             INetworkConnection_Release( conn );
         }
+        ok( !conn, "got wrong pointer: %p.\n", conn );
+
+        conn = (void *)0xdeadbeef;
+        hr = IEnumNetworkConnections_Next( conn_iter, 0, &conn, &fetched );
+        ok( hr == S_OK, "got hr %#x.\n", hr );
+        ok( !conn || broken( conn == (void *)0xdeadbeef ) /* win10 v2004 */,
+                "got wrong pointer: %p.\n", conn );
+        ok( !fetched, "got wrong feteched: %d.\n", fetched );
+
         IEnumNetworkConnections_Release( conn_iter );
     }
 
-- 
2.28.0