libstagefright: Fix incorrectness nPortIndex value for QueryCodec
                The query index is wrong, it will make a death loop in
my ME722 when get resource thumbnail for MPEG4 video.

Change-Id: I64532156e762b847a8eae59560fb828549c29519
Avoid invalid memory access when using extractMetadata()

BpMediaMetadataRetriever::extractMetadata() returns a string
which is returned by readCString() function of the reply parcel object.
However, the parcel object is destroyed at the end of the
extractMetadata() function, and so the returned pointer is invalid.
This patch fixes this problem by storing the metadata string value.

Change-Id: I2a2ccba78246175b2845a237679d6cebe881e83b
Signed-off-by: Sangkyu Lee <sk82.lee@lge.com>
Merge remote-tracking branch 'aokp-mr1/jb-mr1' into jb-mr1

Change-Id: I81f65866a0407b163658866d27d7935d323db875