Fix incorrect comment

lib/compiler.js

@@ -1007,22 +1007,19 @@ PEG.Compiler = {
       "       *",
       "       *    - |result !== null|",
       "       *    - |pos === input.length|",
-      "       *    - |rightmostMatchFailuresExpected.length| may or may not contain",
-      "       *      something",
+      "       *    - |rightmostMatchFailuresExpected| may or may not contain something",
       "       *",
       "       * 2. The parser successfully parsed only a part of the input.",
       "       *",
       "       *    - |result !== null|",
       "       *    - |pos < input.length|",
-      "       *    - |rightmostMatchFailuresExpected.length| may or may not contain",
-      "       *      something",
+      "       *    - |rightmostMatchFailuresExpected| may or may not contain something",
       "       *",
       "       * 3. The parser did not successfully parse any part of the input.",
       "       *",
       "       *   - |result === null|",
       "       *   - |pos === 0|",
-      "       *   - |rightmostMatchFailuresExpected.length| contains at least one",
-      "       *     failure",
+      "       *   - |rightmostMatchFailuresExpected| contains at least one failure",
       "       *",
       "       * All code following this comment (including called functions) must",
       "       * handle these states.",

lib/metagrammar.js

@@ -3401,22 +3401,19 @@ PEG.grammarParser = (function(){
        *
        *    - |result !== null|
        *    - |pos === input.length|
-       *    - |rightmostMatchFailuresExpected.length| may or may not contain
-       *      something
+       *    - |rightmostMatchFailuresExpected| may or may not contain something
        *
        * 2. The parser successfully parsed only a part of the input.
        *
        *    - |result !== null|
        *    - |pos < input.length|
-       *    - |rightmostMatchFailuresExpected.length| may or may not contain
-       *      something
+       *    - |rightmostMatchFailuresExpected| may or may not contain something
        *
        * 3. The parser did not successfully parse any part of the input.
        *
        *   - |result === null|
        *   - |pos === 0|
-       *   - |rightmostMatchFailuresExpected.length| contains at least one
-       *     failure
+       *   - |rightmostMatchFailuresExpected| contains at least one failure
        *
        * All code following this comment (including called functions) must
        * handle these states.