Fix a malloc/delete mismatch introduced in commit 8a9ce57.

core/src/fxcodec/jbig2/JBig2_List.h

Index: core/src/fxcodec/jbig2/JBig2_List.h
diff --git a/core/src/fxcodec/jbig2/JBig2_List.h b/core/src/fxcodec/jbig2/JBig2_List.h
index ffdd22c3ca7bc0659ca2983fc235eae0d3f25fe1..6097294e177d640642098e27506cc9b85c111d17 100644
--- a/core/src/fxcodec/jbig2/JBig2_List.h
+++ b/core/src/fxcodec/jbig2/JBig2_List.h
@@ -15,6 +15,7 @@ template <class TYPE>
 class CJBig2_List {
  public:
   CJBig2_List() {}
+  explicit CJBig2_List(size_t count) { resize(count); }
 
   ~CJBig2_List() {
     clear();
@@ -34,6 +35,12 @@ class CJBig2_List {
   // Takes ownership of |pItem|.
   void push_back(TYPE* pItem) { m_vector.push_back(pItem); }
 
+  // Takes ownership of |pItem|.
+  void set(size_t index, TYPE* pItem) {
+    delete m_vector[index];
+    m_vector[index] = pItem;
+  }
+
   void resize(size_t count) {
     for (size_t i = count; i < size(); ++i)
       delete m_vector[i];