lto: Fix gratuitous memory leaks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110756 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/lto/LTOModule.cpp b/tools/lto/LTOModule.cpp
index 2ab5964..e329d50 100644
--- a/tools/lto/LTOModule.cpp
+++ b/tools/lto/LTOModule.cpp
@@ -188,7 +188,7 @@
       NameAndAttributes info;
       if (_undefines.find(superclassName.c_str()) == _undefines.end()) {
         const char *symbolName = ::strdup(superclassName.c_str());
-        info.name = ::strdup(symbolName);
+        info.name = symbolName;
         info.attributes = LTO_SYMBOL_DEFINITION_UNDEFINED;
         // string is owned by _undefines
         _undefines[info.name] = info;
@@ -220,7 +220,7 @@
       NameAndAttributes info;
       if (_undefines.find(targetclassName.c_str()) == _undefines.end()) {
         const char *symbolName = ::strdup(targetclassName.c_str());
-        info.name = ::strdup(symbolName);
+        info.name = symbolName;
         info.attributes = LTO_SYMBOL_DEFINITION_UNDEFINED;
         // string is owned by _undefines
         _undefines[info.name] = info;
@@ -237,7 +237,7 @@
     NameAndAttributes info;
     if (_undefines.find(targetclassName.c_str()) == _undefines.end()) {
       const char *symbolName = ::strdup(targetclassName.c_str());
-      info.name = ::strdup(symbolName);
+      info.name = symbolName;
       info.attributes = LTO_SYMBOL_DEFINITION_UNDEFINED;
       // string is owned by _undefines
       _undefines[info.name] = info;