Use std::make_shared in LLDB (NFC)

Unlike std::make_unique, which is only available since C++14,
std::make_shared is available since C++11. Not only is std::make_shared
a lot more readable compared to ::reset(new), it also performs a single
heap allocation for the object and control block.

Differential revision: https://reviews.llvm.org/D57990

llvm-svn: 353764
diff --git a/lldb/source/Target/CPPLanguageRuntime.cpp b/lldb/source/Target/CPPLanguageRuntime.cpp
index f3d3ad5..ead8d78 100644
--- a/lldb/source/Target/CPPLanguageRuntime.cpp
+++ b/lldb/source/Target/CPPLanguageRuntime.cpp
@@ -11,6 +11,8 @@
 
 #include <string.h>
 
+#include <memory>
+
 #include "llvm/ADT/StringRef.h"
 
 #include "lldb/Symbol/Block.h"
@@ -327,16 +329,16 @@
         value_sp->GetValueIsValid()) {
       // We found the std::function wrapped callable and we have its address.
       // We now create a ThreadPlan to run to the callable.
-      ret_plan_sp.reset(new ThreadPlanRunToAddress(
-          thread, callable_info.callable_address, stop_others));
+      ret_plan_sp = std::make_shared<ThreadPlanRunToAddress>(
+          thread, callable_info.callable_address, stop_others);
       return ret_plan_sp;
     } else {
       // We are in std::function but we could not obtain the callable.
       // We create a ThreadPlan to keep stepping through using the address range
       // of the current function.
-      ret_plan_sp.reset(new ThreadPlanStepInRange(thread, range_of_curr_func,
-                                                  sc, eOnlyThisThread,
-                                                  eLazyBoolYes, eLazyBoolYes));
+      ret_plan_sp = std::make_shared<ThreadPlanStepInRange>(
+          thread, range_of_curr_func, sc, eOnlyThisThread, eLazyBoolYes,
+          eLazyBoolYes);
       return ret_plan_sp;
     }
   }