Add safe check for mtp_data_header

header is initialized using mIobuf[0].bufs.data(). If mIobuf[0].bufs is NULL, dereferencing header could produce NPE.

Bug: 244106060
Change-Id: I8ca9c4a8c433bb1935879148d918ba6e120d5aa9
Test: presubmit
1 file changed