Java: Inline expectation should have space after $

This was a regex-find-replace from `// \$(?! )` (using a negative lookahead) to `// $ `.

java/ql/test/query-tests/security/CWE-927/SensitiveResultReceiver.java

@@ -10,6 +10,6 @@ class SensitiveResultReceiver {
         ResultReceiver rec = intent.getParcelableExtra("hi");
         Bundle b = new Bundle();
         b.putCharSequence("pass", password);
-        rec.send(0, b); // $hasSensitiveResultReceiver
+        rec.send(0, b); // $ hasSensitiveResultReceiver
     }
-}
+}