SMB_MALLOC without NULL check

[Andreas Moroder]

> Thanks a lot Andreas, I'm fixing these for 3.6.0.
> 
> Jeremy.
> 
Hello Jeremy,

there are three more

utils/smbget.c line 445          readbuf = (char *)SMB_MALLOC(blocksize)

modules/vfs_dirsort.c   line 72 and 93

Bye
Andreas