Added a test for fetching remote tags when there is not tags.
Added a test for fetching remote tags when there is not tags.

When a user runs "git fetch -t", git crashes when it doesn't find any
tags on the remote repository.

Signed-off-by: Väinö Järvelä <7a38d8cbd20d9932ba948efaa364bb62651d5ad4@pp.inet.fi>
Signed-off-by: Lars Hjemli <1022a68b169538dabe33b1e3a08dffa0cefd6c22@gmail.com>
Signed-off-by: Shawn O. Pearce <f01032651c12a22b2103346ba96b3b6b231f9d3c@spearce.org>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git