bug fix: close file pointer

Bug: 63796949

Merged-In: Ifd8a27d851cbc659ea8108e0879747cd9169680a
Change-Id: Ifd8a27d851cbc659ea8108e0879747cd9169680a
(cherry picked from commit 727b2ba98c)

media/omx/1.0/vts/functional/video/VtsHalMediaOmxV1_0TargetVideoDecTest.cpp

@@ -1378,6 +1378,7 @@ TEST_F(VideoDecHidlTest, FlushTest) {
                       Info.size() - index, portMode[1], false);
     }
     // Note: Assumes 200 ms is enough to end any decode call that started
+    eleStream.close();
     flushPorts(omxNode, observer, &iBuffer, &oBuffer, kPortIndexInput,
                kPortIndexOutput, 200000);
     framesReceived = 0;