Cleanup handling of NULL value passed for a mount option
Cleanup handling of NULL value passed for a mount option

Allow blank user= and ip= mount option. Also clean up redundant
checks for NULL values since the token parser will not actually
match mount options with NULL values unless explicitly specified.

Signed-off-by: Sachin Prabhu <fe031bd268e574c3e649d0fd7ef4a978e9d7c1cd@redhat.com>
Reported-by: Chris Clayton <9b914457bb759d41b751534c9c3099e6ed3abb24@googlemail.com>
Acked-by: Jeff Layton <4376fbf8623cd7b7c0232225289bb91cedc0a27f@samba.org>
Tested-by: Chris Clayton <9b914457bb759d41b751534c9c3099e6ed3abb24@googlemail.com>
Signed-off-by: Steve French <d47560e3bac353b8d509d093b1d727868ac7ddf3@us.ibm.com>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas