a7563b0 Add code to check whether the pointer 'PathForReturn' in ShellProtocol.c is NULL before used.

1 file Authored by Shumin Qiu 10 years ago, Committed by shenshushi 10 years ago,
    Add code to check whether the pointer 'PathForReturn' in ShellProtocol.c is NULL before used.
    
    Contributed-under: TianoCore Contribution Agreement 1.0
    Signed-off-by: Shumin Qiu <shumin.qiu@intel.com>
    Reviewed-by: Jaben Carsey <Jaben.carsey@intel.com>
    
    
    git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15230 6f19259b-4bc3-4df7-8a09-765794883524