Initialize mInputBuffers

Test: make cts -j123 && cts-tradefed run cts-dev -m \
CtsMediaTestCases --compatibility:module-arg \
CtsMediaTestCases:include-annotation:\
android.platform.test.annotations.RequiresDevice

Bug: 117890214
Bug: 119002584
Change-Id: I13f95ab5ef5e285a74ade203b9579f4c1bc23e95
Merged-In: I13f95ab5ef5e285a74ade203b9579f4c1bc23e95
(cherry picked from commit 8b12666ff22b1187c9e565d640a54cae28a5dd7e)
diff --git a/media/sfplugin/CCodecBufferChannel.cpp b/media/sfplugin/CCodecBufferChannel.cpp
index 128061c..5be014b 100644
--- a/media/sfplugin/CCodecBufferChannel.cpp
+++ b/media/sfplugin/CCodecBufferChannel.cpp
@@ -1446,6 +1446,8 @@
       mMetaMode(MODE_NONE),
       mAvailablePipelineCapacity(),
       mInputMetEos(false) {
+    Mutexed<std::unique_ptr<InputBuffers>>::Locked buffers(mInputBuffers);
+    buffers->reset(new DummyInputBuffers(""));
 }
 
 CCodecBufferChannel::~CCodecBufferChannel() {