Mac QTKit video capture: Correct DCHECK #inputs==1 location

media/video/capture/mac/video_capture_device_qtkit_mac.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "media/video/capture/mac/video_capture_device_qtkit_mac.h"
 
 #import <QTKit/QTKit.h>
 
 #include "base/debug/crash_logging.h"
 #include "base/logging.h"
@@ skipping 218 matching lines @@
   // tasks in the main thread. See bugs http://crbug.com/152757 and
   // http://crbug.com/399792.
   [self performSelectorOnMainThread:@selector(stopCaptureOnUIThread:)
                          withObject:nil
                       waitUntilDone:YES];
   [[NSNotificationCenter defaultCenter] removeObserver:self];
 }
 
 - (void)stopCaptureOnUIThread:(id)dummy {
   if ([[captureSession_ inputs] count] > 0) {
+    DCHECK_EQ([[captureSession_ inputs] count], 1u);
     [captureSession_ removeInput:captureDeviceInput_];
-    DCHECK_EQ([[captureSession_ inputs] count], 1u);
     [captureSession_ stopRunning];
   }
   if ([[captureSession_ outputs] count] > 0) {
     DCHECK_EQ([[captureSession_ outputs] count], 1u);
     id output = [[captureSession_ outputs] objectAtIndex:0];
     [output setDelegate:nil];
     [captureSession_ removeOutput:output];
   }
 }
 
@@ skipping 96 matching lines @@
 
 - (void)sendLogString:(NSString*)message {
   DVLOG(1) << [message UTF8String];
   [lock_ lock];
   if (frameReceiver_)
     frameReceiver_->LogMessage([message UTF8String]);
   [lock_ unlock];
 }
 
 @end