Don't return error_code from a function that doesn't fail.

llvm-svn: 241042
diff --git a/llvm/lib/Object/MachOObjectFile.cpp b/llvm/lib/Object/MachOObjectFile.cpp
index 9763fab..79220f4 100644
--- a/llvm/lib/Object/MachOObjectFile.cpp
+++ b/llvm/lib/Object/MachOObjectFile.cpp
@@ -659,9 +659,8 @@
   return getAnyRelocationType(RE);
 }
 
-std::error_code
-MachOObjectFile::getRelocationTypeName(DataRefImpl Rel,
-                                       SmallVectorImpl<char> &Result) const {
+void MachOObjectFile::getRelocationTypeName(
+    DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
   StringRef res;
   uint64_t RType = getRelocationType(Rel);
 
@@ -767,7 +766,6 @@
       break;
   }
   Result.append(res.begin(), res.end());
-  return std::error_code();
 }
 
 uint8_t MachOObjectFile::getRelocationLength(DataRefImpl Rel) const {