llvm-objdump: Fix use after free.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140237 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-objdump/MachODump.cpp b/tools/llvm-objdump/MachODump.cpp
index 7e3bb20..0daf9d4 100644
--- a/tools/llvm-objdump/MachODump.cpp
+++ b/tools/llvm-objdump/MachODump.cpp
@@ -346,11 +346,11 @@
   StringRef DebugAbbrevSection, DebugInfoSection, DebugArangesSection,
             DebugLineSection, DebugStrSection;
   OwningPtr<DIContext> diContext;
+  OwningPtr<MachOObject> DSYMObj;
   // Try to find debug info and set up the DIContext for it.
   if (UseDbg) {
     ArrayRef<Section> DebugSections = Sections;
     std::vector<Section> DSYMSections;
-    OwningPtr<MachOObject> DSYMObj;
 
     // A separate DSym file path was specified, parse it as a macho file,
     // get the sections and supply it to the section name parsing machinery.