source/test.cry, Line 4, Column 8: Variable is used, but has not been assigned to before this point in code. Even if this is in a loop, ensure that the variable is assigned a value before the loop starts.

source/test.cry, Line 4, Column 8: The variable 'x' is used, but has not been assigned to before this point in code. Even if this is in a loop, ensure that the variable is assigned a value before the loop starts.

Update negative test for variable usage to match new error message wording.
Update negative test for variable usage to match new error message wording.
