Mach-O: Tweak field name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121465 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Object/MachOObject.cpp b/lib/Object/MachOObject.cpp
index 7592a99..2cf73ea 100644
--- a/lib/Object/MachOObject.cpp
+++ b/lib/Object/MachOObject.cpp
@@ -217,7 +217,7 @@
 void SwapStruct(macho::DysymtabLoadCommand &Value) {
   SwapValue(Value.Type);
   SwapValue(Value.Size);
-  SwapValue(Value.LocalSymbolIndex);
+  SwapValue(Value.LocalSymbolsIndex);
   SwapValue(Value.NumLocalSymbols);
   SwapValue(Value.ExternalSymbolsIndex);
   SwapValue(Value.NumExternalSymbols);