Add the needed lld change for r264187 in llvm.

Sorry had this fixed in my check out but failed mention it in my
commit message for r264187.

llvm-svn: 264188

lld/lib/ReaderWriter/FileArchive.cpp

@@ -187,7 +187,10 @@ private:
         continue;
 
       // Returns true if it's a data symbol.
-      SymbolRef::Type type = sym.getType();
+      ErrorOr<SymbolRef::Type> typeOrErr = sym.getType();
+      if (typeOrErr.getError())
+        return false;
+      SymbolRef::Type type = *typeOrErr;
       if (type == SymbolRef::ST_Data)
         return true;
     }