Bitcode: Change module reader functions to return an llvm::Expected.

Differential Revision: https://reviews.llvm.org/D26562

llvm-svn: 286752
diff --git a/llvm/lib/Object/SymbolicFile.cpp b/llvm/lib/Object/SymbolicFile.cpp
index 31d41e6..bedca66 100644
--- a/llvm/lib/Object/SymbolicFile.cpp
+++ b/llvm/lib/Object/SymbolicFile.cpp
@@ -35,7 +35,7 @@
   switch (Type) {
   case sys::fs::file_magic::bitcode:
     if (Context)
-      return errorOrToExpected(IRObjectFile::create(Object, *Context));
+      return IRObjectFile::create(Object, *Context);
     LLVM_FALLTHROUGH;
   case sys::fs::file_magic::unknown:
   case sys::fs::file_magic::archive:
@@ -73,9 +73,9 @@
     if (!BCData)
       return std::move(Obj);
 
-    return errorOrToExpected(IRObjectFile::create(
-                                 MemoryBufferRef(BCData->getBuffer(),
-                                 Object.getBufferIdentifier()), *Context));
+    return IRObjectFile::create(
+        MemoryBufferRef(BCData->getBuffer(), Object.getBufferIdentifier()),
+        *Context);
   }
   }
   llvm_unreachable("Unexpected Binary File Type");