va_wrapper: free search_path in init_i965_contex
va_wrapper: free search_path in init_i965_contex

The search_path is dup'd in init_i965_contex() but
never free'd.  Thus, free it before returning.

Signed-off-by: U. Artie Eoff <32aece0d55055227b44d04b7d0051cf3d04ee871@intel.com>

BtbN/intel-hybrid-driver,BtbN/intel-hybrid-driver,01org/intel-hybrid-driver,seanvk/intel-hybrid-driver,BtbN/intel-hybrid-driver,seanvk/intel-hybrid-driver,01org/intel-hybrid-driver,seanvk/intel-hybrid-driver,BtbN/intel-hybrid-driver,seanvk/intel-hybrid-driver,01org/intel-hybrid-driver,gbeauchesne/libva-intel-hybrid-driver,gbeauchesne/libva-intel-hybrid-driver,gbeauchesne/libva-intel-hybrid-driver,seanvk/intel-hybrid-driver,gbeauchesne/libva-intel-hybrid-driver,01org/intel-hybrid-driver,01org/intel-hybrid-driver,gbeauchesne/libva-intel-hybrid-driver,BtbN/intel-hybrid-driver