Ensure usable space data is zeroed in arrays.

Address other outstanding review comments.

Change-Id: Iaffe04de080772a0d0c5fd973bcac0e23c8c3e25
diff --git a/runtime/class_linker-inl.h b/runtime/class_linker-inl.h
index 6ef0082..3da7409 100644
--- a/runtime/class_linker-inl.h
+++ b/runtime/class_linker-inl.h
@@ -40,7 +40,7 @@
 
 inline mirror::Class* ClassLinker::FindArrayClass(Thread* self, mirror::Class* element_class) {
   for (size_t i = 0; i < kFindArrayCacheSize; ++i) {
-    // Read the cached the array class once to avoid races with other threads setting it.
+    // Read the cached array class once to avoid races with other threads setting it.
     mirror::Class* array_class = find_array_class_cache_[i];
     if (array_class != nullptr && array_class->GetComponentType() == element_class) {
       return array_class;