llvm/unittests: Use OwningPtr to fix --vg-leak.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173240 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Option/OptionParsingTest.cpp b/unittests/Option/OptionParsingTest.cpp
index c90691a..30944d9 100644
--- a/unittests/Option/OptionParsingTest.cpp
+++ b/unittests/Option/OptionParsingTest.cpp
@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/ADT/OwningPtr.h"
 #include "llvm/Option/Arg.h"
 #include "llvm/Option/ArgList.h"
 #include "llvm/Option/Option.h"
@@ -60,7 +61,11 @@
 TEST(Support, OptionParsing) {
   TestOptTable T;
   unsigned MAI, MAC;
-  InputArgList *AL = T.ParseArgs(Args, Args + (sizeof(Args) / sizeof(Args[0])), MAI, MAC);
+  OwningPtr<InputArgList>
+    AL(T.ParseArgs(Args,
+                   Args + (sizeof(Args) / sizeof(Args[0])),
+                   MAI,
+                   MAC));
 
   // Check they all exist.
   EXPECT_TRUE(AL->hasArg(OPT_A));