media/libmedia/mediaplayer.cpp: fix warning: argument to 'sizeof' in 'void* memset(void*, int, size_t)' call is the same expression as the destination; did you mean to remove the addressof? [-Wsizeof-pointer-memaccess]

Change-Id: I459736e092aeec4773b2ccb81296b49fe01895cc
Signed-off-by: Hieu Phan <aznrice2k4@gmail.com>