Set::insert() failed to overwrite values that were previously
defined as strings. Remove test in SessionComponentTest that was
ensuring this bug stuck around.
Fixes#2722
$expected is the first argument. Now certain test results start to make
sense:
1) MultibyteTest::testUsingMbStrtolower
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
-ႠႡႢႣႤႥႦႧႨႩႪႫႬႭႮႯႰႱႲႳႴႵႶႷႸႹႺႻႼႽႾႿჀჁჂჃჄჅ
+ⴀⴁⴂⴃⴄⴅⴆⴇⴈⴉⴊⴋⴌⴍⴎⴏⴐⴑⴒⴓⴔⴕⴖⴗⴘⴙⴚⴛⴜⴝⴞⴟⴠⴡⴢⴣⴤⴥ