Jactry Zeng : qcap: Avoid call LeaveCriticalSection() repeatedly.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 6530824ab31bf9af311f3f93e2d145b81f85de9c
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=6530824ab31bf9af311f3f93e2d145b81f85de9c

Author: Jactry Zeng <jzeng at codeweavers.com>
Date:   Tue Feb  7 22:20:29 2017 +0800

qcap: Avoid call LeaveCriticalSection() repeatedly.

Signed-off-by: Jactry Zeng <jzeng at codeweavers.com>
Signed-off-by: Andrew Eikum <aeikum at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/qcap/v4l.c | 29 +++++++++++++----------------
 1 file changed, 13 insertions(+), 16 deletions(-)

diff --git a/dlls/qcap/v4l.c b/dlls/qcap/v4l.c
index 54e0230..bc760bd 100644
--- a/dlls/qcap/v4l.c
+++ b/dlls/qcap/v4l.c
@@ -604,7 +604,12 @@ static DWORD WINAPI ReadThread(LPVOID lParam)
 
     hr = V4l_Prepare(capBox);
     if (FAILED(hr))
-        goto fail;
+    {
+        ERR("Stop IFilterGraph: %x\n", hr);
+        capBox->thread = 0;
+        capBox->stopped = TRUE;
+        return 0;
+    }
 
     pOutput = CoTaskMemAlloc(capBox->width * capBox->height * capBox->bitDepth / 8);
     capBox->curframe = 0;
@@ -641,27 +646,19 @@ static DWORD WINAPI ReadThread(LPVOID lParam)
             IMediaSample_Release(pSample);
             V4l_FreeFrame(capBox);
         }
-        LeaveCriticalSection(&capBox->CritSect);
         if (FAILED(hr) && hr != VFW_E_NOT_CONNECTED)
         {
-            ERR("Received error: %x\n", hr);
-            goto cfail;
+            TRACE("Return %x, stop IFilterGraph\n", hr);
+            V4l_Unprepare(capBox);
+            capBox->thread = 0;
+            capBox->stopped = TRUE;
+            break;
         }
+        LeaveCriticalSection(&capBox->CritSect);
     }
-    LeaveCriticalSection(&capBox->CritSect);
-    CoTaskMemFree(pOutput);
-
-    return 0;
 
-cfail:
-    CoTaskMemFree(pOutput);
-    V4l_Unprepare(capBox);
     LeaveCriticalSection(&capBox->CritSect);
-
-fail:
-    capBox->thread = 0;
-    capBox->stopped = TRUE;
-    FIXME("Stop IFilterGraph\n");
+    CoTaskMemFree(pOutput);
     return 0;
 }