Fixed lambda return value error on VS2010.

Change-Id: I6d0e8469bfa5b4c8a3f1cb119e186f4cf62c76ae

tests/test.cpp

@@ -317,13 +317,14 @@ void ObjectFlatBuffersTest(uint8_t *flatbuf) {
   // Optional: we can specify resolver and rehasher functions to turn hashed
   // strings into object pointers and back, to implement remote references
   // and such.
-  auto resolver = flatbuffers::resolver_function_t([](void **pointer_adr,
-                                               flatbuffers::hash_value_t hash) {
+  auto resolver = flatbuffers::resolver_function_t(
+                    [](void **pointer_adr, flatbuffers::hash_value_t hash) {
     (void)pointer_adr;
     (void)hash;
     // Don't actually do anything, leave variable null.
   });
-  auto rehasher = flatbuffers::rehasher_function_t([](void *pointer) {
+  auto rehasher = flatbuffers::rehasher_function_t(
+                    [](void *pointer) -> flatbuffers::hash_value_t {
     (void)pointer;
     return 0;
   });