Use the passed-in 'name' param to create a MemMap.

Change-Id: I15c33b23751f4c32cb40c9514b602845feb47f9f
Signed-off-by: Kyungmin Lee <snailee@gmail.com>
diff --git a/runtime/gc/heap.cc b/runtime/gc/heap.cc
index c2baa29..2892857 100644
--- a/runtime/gc/heap.cc
+++ b/runtime/gc/heap.cc
@@ -437,7 +437,7 @@
 MemMap* Heap::MapAnonymousPreferredAddress(const char* name, uint8_t* request_begin, size_t capacity,
                                            int prot_flags, std::string* out_error_str) {
   while (true) {
-    MemMap* map = MemMap::MapAnonymous(kMemMapSpaceName[0], request_begin, capacity,
+    MemMap* map = MemMap::MapAnonymous(name, request_begin, capacity,
                                        PROT_READ | PROT_WRITE, true, out_error_str);
     if (map != nullptr || request_begin == nullptr) {
       return map;