Fix build.

At least part of what is broken.  Other stuff still seems to be.

Change-Id: I367dc0377bd5b4e59d9d9b68f3506bf1d64aa591
(cherry picked from commit 32bb5fae353b5bb6275e75952e89c514c7369cee)
diff --git a/include/androidfw/AssetManager.h b/include/androidfw/AssetManager.h
index e0c6183..503377c 100644
--- a/include/androidfw/AssetManager.h
+++ b/include/androidfw/AssetManager.h
@@ -224,7 +224,7 @@
      * corresponding overlay package.
      */
     bool createIdmap(const char* targetApkPath, const char* overlayApkPath,
-        uint32_t targetCrc, uint32_t overlayCrc, uint32_t** outData, uint32_t* outSize);
+        uint32_t targetCrc, uint32_t overlayCrc, uint32_t** outData, size_t* outSize);
 
 private:
     struct asset_path