Pass reuse flag to MemMap constructor

Bug: 21806978
Change-Id: Iec92220d8f42e1d702ee39b27a8de570ea1ab588
diff --git a/runtime/mem_map.cc b/runtime/mem_map.cc
index fa041a9..7e640c6 100644
--- a/runtime/mem_map.cc
+++ b/runtime/mem_map.cc
@@ -436,7 +436,7 @@
     return nullptr;
   }
   return new MemMap(name, reinterpret_cast<uint8_t*>(actual), byte_count, actual,
-                    page_aligned_byte_count, prot, false);
+                    page_aligned_byte_count, prot, reuse);
 }
 
 MemMap* MemMap::MapDummy(const char* name, uint8_t* addr, size_t byte_count) {