Support ELF files of unknown type.

llvm-svn: 222208
diff --git a/llvm/lib/Object/SymbolicFile.cpp b/llvm/lib/Object/SymbolicFile.cpp
index 9dfb09d..ffd3dbc 100644
--- a/llvm/lib/Object/SymbolicFile.cpp
+++ b/llvm/lib/Object/SymbolicFile.cpp
@@ -40,6 +40,7 @@
   case sys::fs::file_magic::macho_universal_binary:
   case sys::fs::file_magic::windows_resource:
     return object_error::invalid_file_type;
+  case sys::fs::file_magic::elf:
   case sys::fs::file_magic::elf_executable:
   case sys::fs::file_magic::elf_shared_object:
   case sys::fs::file_magic::elf_core: