Be more specific about return type of MachOUniversalBinary::getObjectForArch

llvm-svn: 220230
diff --git a/llvm/lib/Object/MachOUniversal.cpp b/llvm/lib/Object/MachOUniversal.cpp
index e310a71..77aeb63 100644
--- a/llvm/lib/Object/MachOUniversal.cpp
+++ b/llvm/lib/Object/MachOUniversal.cpp
@@ -67,7 +67,7 @@
   }
 }
 
-ErrorOr<std::unique_ptr<ObjectFile>>
+ErrorOr<std::unique_ptr<MachOObjectFile>>
 MachOUniversalBinary::ObjectForArch::getAsObjectFile() const {
   if (Parent) {
     StringRef ParentData = Parent->getData();
@@ -139,7 +139,7 @@
   }
 }
 
-ErrorOr<std::unique_ptr<ObjectFile>>
+ErrorOr<std::unique_ptr<MachOObjectFile>>
 MachOUniversalBinary::getObjectForArch(Triple::ArchType Arch) const {
   MachO::CPUType CTM;
   if (!getCTMForArch(Arch, CTM))