Fix typo in Enqueuer

Change-Id: Idfb839d77effa33fea862ab370e5d2e7a45b3957
diff --git a/src/main/java/com/android/tools/r8/shaking/Enqueuer.java b/src/main/java/com/android/tools/r8/shaking/Enqueuer.java
index 20e8d57..77a369d 100644
--- a/src/main/java/com/android/tools/r8/shaking/Enqueuer.java
+++ b/src/main/java/com/android/tools/r8/shaking/Enqueuer.java
@@ -112,7 +112,7 @@
   private final Set<DexField> protoLiteFields = Sets.newIdentityHashSet();
   private final Set<DexItem> identifierNameStrings = Sets.newIdentityHashSet();
 
-  /** Set of method signatures used in invoke-super instructions that cannot not be resolved. */
+  /** Set of method signatures used in invoke-super instructions that cannot be resolved. */
   private final Set<DexMethod> brokenSuperInvokes = Sets.newIdentityHashSet();
   /**
    * This map keeps a view of all virtual methods that are reachable from virtual invokes. A method
@@ -1520,7 +1520,7 @@
      * Set of all methods referenced in static invokes;
      */
     public final SortedSet<DexMethod> staticInvokes;
-    /** Set of method signatures used in invoke-super instructions that cannot not be resolved. */
+    /** Set of method signatures used in invoke-super instructions that cannot be resolved. */
     public final SortedSet<DexMethod> brokenSuperInvokes;
     /**
      * Set of all items that have to be kept independent of whether they are used.