Properly handle a null row / zero rows

[bsclifton]

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).

Fixes #5236

Auditors: @darkdh, @jkup

Test Plan:

1. Launch Brave and go to Preferences
2. Go to Search and confirm it loads
3. Go to Payments and confirm it loads

[jkup]

++

[darkdh]

++