Fix redundant blocks

Change-Id: I309771d42590ccd52861ebb8d5a2c81399450efa
diff --git a/src/main/java/com/android/tools/r8/horizontalclassmerging/code/ClassInitializerMerger.java b/src/main/java/com/android/tools/r8/horizontalclassmerging/code/ClassInitializerMerger.java
index 09e9911..b4d26cd 100644
--- a/src/main/java/com/android/tools/r8/horizontalclassmerging/code/ClassInitializerMerger.java
+++ b/src/main/java/com/android/tools/r8/horizontalclassmerging/code/ClassInitializerMerger.java
@@ -280,6 +280,9 @@
       // Cleanup.
       code.removeBlocks(blocksToRemove);
       code.removeAllDeadAndTrivialPhis();
+      code.removeRedundantBlocks();
+
+      assert code.isConsistentSSA(appView);
 
       return code;
     }