winmm: Add missing LeaveCriticalSection on error paths (Smatch).

[Michael Stefaniuc]

---
 dlls/winmm/waveform.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/dlls/winmm/waveform.c b/dlls/winmm/waveform.c
index ec230c9..8957c4c 100644
--- a/dlls/winmm/waveform.c
+++ b/dlls/winmm/waveform.c
@@ -757,12 +757,14 @@ static HRESULT reroute_mapper_device(WINMM_Device *device, BOOL is_out)
     hr = IAudioClock_GetFrequency(device->clock, &clock_freq);
     if(FAILED(hr)){
         WARN("GetFrequency failed: %08x\n", hr);
+        LeaveCriticalSection(&device->lock);
         return hr;
     }
 
     hr = IAudioClock_GetPosition(device->clock, &clock_pos, NULL);
     if(FAILED(hr)){
         WARN("GetPosition failed: %08x\n", hr);
+        LeaveCriticalSection(&device->lock);
         return hr;
     }
 
-- 
1.7.6.5