Fixed AddFlatBuffer using wrong buffer length.

Also made the Xcode project link.

Tested: on OS X.

src/reflection.cpp

@@ -334,8 +334,7 @@ const uint8_t *AddFlatBuffer(std::vector<uint8_t> &flatbuf,
   }
   auto insertion_point = static_cast<uoffset_t>(flatbuf.size());
   // Insert the entire FlatBuffer minus the root pointer.
-  flatbuf.insert(flatbuf.end(), newbuf + sizeof(uoffset_t),
-                 newbuf + newlen - sizeof(uoffset_t));
+  flatbuf.insert(flatbuf.end(), newbuf + sizeof(uoffset_t), newbuf + newlen);
   auto root_offset = ReadScalar<uoffset_t>(newbuf) - sizeof(uoffset_t);
   return flatbuf.data() + insertion_point + root_offset;
 }

tests/test.cpp

@@ -393,8 +393,8 @@ void ReflectionTest(uint8_t *flatbuf, size_t length) {
   // We do this last, so the pointer doesn't get invalidated (since it is
   // at the end of the buffer):
   auto string_ptr = flatbuffers::AddFlatBuffer(resizingbuf,
-                                                  stringfbb.GetBufferPointer(),
-                                                  stringfbb.GetSize());
+                                               stringfbb.GetBufferPointer(),
+                                               stringfbb.GetSize());
   // Finally, set the new value in the vector.
   rtestarrayofstring->MutateOffset(2, string_ptr);
   TEST_EQ_STR(rtestarrayofstring->Get(0)->c_str(), "bob");