Convert mEntries -> entries, fixing the build.

Change-Id: Ica2cd26f12423f37707ab6f96225d3a994fbb9db
diff --git a/luni/src/main/java/java/util/zip/ZipFile.java b/luni/src/main/java/java/util/zip/ZipFile.java
index 5d16f33..172141c 100644
--- a/luni/src/main/java/java/util/zip/ZipFile.java
+++ b/luni/src/main/java/java/util/zip/ZipFile.java
@@ -351,7 +351,7 @@
         for (int i = 0; i < numEntries; ++i) {
             ZipEntry newEntry = new ZipEntry(hdrBuf, bufferedStream);
             String entryName = newEntry.getName();
-            if (mEntries.put(entryName, newEntry) != null) {
+            if (entries.put(entryName, newEntry) != null) {
                 throw new ZipException("Duplicate entry name: " + entryName);
             }
         }