Incorrect ref API usage fixed. (facebook#20913)

Summary:
release method of local_ref and global_ref doesn't call deallocator, in fact, it leaves the caller responsible for deletion of the reference, while otherwise the reference is released on scope left.

Fixes facebook#18292.
Pull Request resolved: facebook#20913

Differential Revision: D9616237

Pulled By: hramos

fbshipit-source-id: 021aa3e4f039e6b7a98da3e4224c1ee49d5a4921

Author: dryganets

ReactAndroid/src/main/jni/react/jni/ReadableNativeArray.cpp

@@ -113,7 +113,7 @@ local_ref<JArrayClass<jobject>> ReadableNativeArray::importTypeArray() {
   jint size = array_.size();
   auto jarray = JArrayClass<jobject>::newArray(size);
   for (jint i = 0; i < size; i++) {
-    jarray->setElement(i, ReadableNativeArray::getType(i).release());
+    jarray->setElement(i, ReadableNativeArray::getType(i).get());
   }
   return jarray;
 }