fix minor unreachable code caused by t.Fatal

Signed-off-by: Abirdcfly <fp544037857@gmail.com>

queue/queue_test.go

@@ -102,12 +102,12 @@ func Test_MergeQueuedStatements(t *testing.T) {
 			t.Fatalf("statements don't match for test %d", i)
 		}
 		if len(r.flushChans) != len(tt.exp.flushChans) {
-			t.Fatalf("incorrect number of flush channels for test %d", i)
 			for i := range r.flushChans {
 				if r.flushChans[i] != tt.exp.flushChans[i] {
-					t.Fatalf("wrong channel for test %d", i)
+					t.Errorf("wrong channel for test %d", i)
 				}
 			}
+			t.Fatalf("incorrect number of flush channels for test %d", i)
 		}
 	}
 }