Basic support for parsing Mach-O universal binaries in LLVMObject library

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184191 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Object/Error.cpp b/lib/Object/Error.cpp
index 7005a72..47ce38c 100644
--- a/lib/Object/Error.cpp
+++ b/lib/Object/Error.cpp
@@ -34,6 +34,8 @@
   object_error::Impl E = static_cast<object_error::Impl>(ev);
   switch (E) {
   case object_error::success: return "Success";
+  case object_error::arch_not_found:
+    return "No object file for requested architecture";
   case object_error::invalid_file_type:
     return "The file was not recognized as a valid object file";
   case object_error::parse_failed: