Merge 94262 - Add defensive bounds checking for AudioNode methods

Source/WebCore/webaudio/AudioNode.cpp

Index: Source/WebCore/webaudio/AudioNode.cpp
===================================================================
--- Source/WebCore/webaudio/AudioNode.cpp	(revision 94266)
+++ Source/WebCore/webaudio/AudioNode.cpp	(working copy)
@@ -100,12 +100,16 @@
 
 AudioNodeInput* AudioNode::input(unsigned i)
 {
-    return m_inputs[i].get();
+    if (i < m_inputs.size())
+        return m_inputs[i].get();
+    return 0;
 }
 
 AudioNodeOutput* AudioNode::output(unsigned i)
 {
-    return m_outputs[i].get();
+    if (i < m_outputs.size())
+        return m_outputs[i].get();
+    return 0;
 }
 
 bool AudioNode::connect(AudioNode* destination, unsigned outputIndex, unsigned inputIndex)