Fix "Undefined index: icon" when visiting Search Servers using MySQL
Summary:
Fix "Undefined index: icon" when visiting Search Servers using MySQL
NOTE: This patch just fixes the exception at my best but this section probably deserves more improvement to show a better default.
Closes T15155
Test Plan:
- use the default Search Server configuration (that is MySQL)
- open the page Search Servers (/config/cluster/search/)
- verify that it does not explode anymore but it displays something unuseful
Reviewers: O1 Blessed Committers, avivey
Reviewed By: O1 Blessed Committers, avivey
Subscribers: avivey, speck, tobiaswiese, Matthew, Cigaryno
Maniphest Tasks: T15155
Differential Revision: https://we.phorge.it/D25070