Fixing JNI release build for gcc (#975)

java/rocksjni/write_batch_test.cc

@@ -60,7 +60,9 @@ jbyteArray Java_org_rocksdb_WriteBatchTest_getContents(
     rocksdb::ParsedInternalKey ikey;
     memset(reinterpret_cast<void*>(&ikey), 0, sizeof(ikey));
     bool parsed = rocksdb::ParseInternalKey(iter->key(), &ikey);
+    if (!parsed) {
       assert(parsed);
+    }
     switch (ikey.type) {
       case rocksdb::kTypeValue:
         state.append("Put(");