Refs #6078, fixing build.

tests/PHPUnit/Integration/expected/test_PivotByQueryParamTest_test_PivotByParam_WorksWithJsonOutput__Referrers.getKeywords_week.json

-[{"label":"this search term","1. Toronto, Ontario, Canada":false,"2. Yokohama, Kanagawa, Japan":1,"3. Melbourne, Victoria, Australia":2},{"label":"search term 2","1. Toronto, Ontario, Canada":false,"2. Yokohama, Kanagawa, Japan":2,"3. Melbourne, Victoria, Australia":false},{"label":"search term 3","1. Toronto, Ontario, Canada":2,"2. Yokohama, Kanagawa, Japan":false,"3. Melbourne, Victoria, Australia":false},{"label":"search term 4","1. Toronto, Ontario, Canada":2,"2. Yokohama, Kanagawa, Japan":false,"3. Melbourne, Victoria, Australia":false},{"label":"that search term","1. Toronto, Ontario, Canada":false,"2. Yokohama, Kanagawa, Japan":false,"3. Melbourne, Victoria, Australia":2},{"label":"search term 1","1. Toronto, Ontario, Canada":false,"2. Yokohama, Kanagawa, Japan":1,"3. Melbourne, Victoria, Australia":false}]
+[{"label":"this search term","1.\u00a0Toronto, Ontario, Canada":false,"2.\u00a0Yokohama, Kanagawa, Japan":1,"3.\u00a0Melbourne, Victoria, Australia":2},{"label":"search term 2","1.\u00a0Toronto, Ontario, Canada":false,"2.\u00a0Yokohama, Kanagawa, Japan":2,"3.\u00a0Melbourne, Victoria, Australia":false},{"label":"search term 3","1.\u00a0Toronto, Ontario, Canada":2,"2.\u00a0Yokohama, Kanagawa, Japan":false,"3.\u00a0Melbourne, Victoria, Australia":false},{"label":"search term 4","1.\u00a0Toronto, Ontario, Canada":2,"2.\u00a0Yokohama, Kanagawa, Japan":false,"3.\u00a0Melbourne, Victoria, Australia":false},{"label":"that search term","1.\u00a0Toronto, Ontario, Canada":false,"2.\u00a0Yokohama, Kanagawa, Japan":false,"3.\u00a0Melbourne, Victoria, Australia":2},{"label":"search term 1","1.\u00a0Toronto, Ontario, Canada":false,"2.\u00a0Yokohama, Kanagawa, Japan":1,"3.\u00a0Melbourne, Victoria, Australia":false}]
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