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/Commands/CommandObjectBreakpoint.cpp b/lldb/source/Commands/CommandObjectBreakpoint.cpp
index 3996bcf..b9b0cb5 100644
--- a/lldb/source/Commands/CommandObjectBreakpoint.cpp
+++ b/lldb/source/Commands/CommandObjectBreakpoint.cpp
@@ -6,8 +6,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include <vector>
-
 #include "CommandObjectBreakpoint.h"
 #include "CommandObjectBreakpointCommand.h"
 #include "lldb/Breakpoint/Breakpoint.h"
@@ -30,6 +28,9 @@
 #include "lldb/Utility/RegularExpression.h"
 #include "lldb/Utility/StreamString.h"
 
+#include <memory>
+#include <vector>
+
 using namespace lldb;
 using namespace lldb_private;
 
@@ -615,7 +616,7 @@
       m_move_to_nearest_code = eLazyBoolCalculate;
       m_source_regex_func_names.clear();
       m_python_class.clear();
-      m_extra_args_sp.reset(new StructuredData::Dictionary());
+      m_extra_args_sp = std::make_shared<StructuredData::Dictionary>();
       m_current_key.clear();
     }