Fix incorrect error message for ScriptProcessorNode

third_party/WebKit/Source/modules/webaudio/ScriptProcessorNode.cpp

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 362 matching lines @@
             IndexSizeError,
             "number of input channels (" + String::number(numberOfInputChannels)
             + ") exceeds maximum ("
             + String::number(BaseAudioContext::maxNumberOfChannels()) + ").");
         return nullptr;
     }
 
     if (numberOfOutputChannels > BaseAudioContext::maxNumberOfChannels()) {
         exceptionState.throwDOMException(
             IndexSizeError,
-            "number of output channels (" + String::number(numberOfInputChannels)
+            "number of output channels (" + String::number(numberOfOutputChannels)
             + ") exceeds maximum ("
             + String::number(BaseAudioContext::maxNumberOfChannels()) + ").");
         return nullptr;
     }
 
     // Check for valid buffer size.
     switch (bufferSize) {
     case 0:
         bufferSize = chooseBufferSize();
         break;
@@ skipping 38 matching lines @@
     // If |onaudioprocess| event handler is defined, the node should not be
     // GCed even if it is out of scope.
     if (hasEventListeners(EventTypeNames::audioprocess))
         return true;
 
     return false;
 }
 
 } // namespace blink