make it pass for all line endings

Author: SimonDanisch

test/query.jl

@@ -316,8 +316,8 @@ end
     open(q) do io
         @test position(io) == 0
         @test FileIO.detect_rdata(io)
-        # This will only be the case for /r/n line endings, which the sample file has
-        @test position(io) == 6
+        # 6 for /r/n  and 5 for /n
+        @test (position(io) in (5, 6))
     end
 end
 @testset "Format with function for magic bytes" begin