Fix expectation in NSData tests

swift/ql/test/library-tests/dataflow/taint/TaintInline.expected

@@ -1 +0,0 @@
-| nsdata.swift:110:45:110:45 | bytes | Unexpected result: tainted=108 |

swift/ql/test/library-tests/dataflow/taint/nsdata.swift

@@ -107,7 +107,7 @@ func test() {
     // ";NSData;true;enumerateBytes(_:);;;Argument[-1];Argument[0].Parameter[0];taint"
     let nsDataTainted17 = source() as! NSData
     nsDataTainted17.enumerateBytes {
-        bytes, byteRange, stop in sink(arg: bytes) // tainted=108
+        bytes, byteRange, stop in sink(arg: bytes) // $ tainted=108
     }
     // ";NSData;true;getBytes(_:);;;Argument[-1];Argument[0];taint",
     let nsDataTainted18 = source() as! NSData