Add missing includes.

llvm-svn: 105712
diff --git a/lldb/source/Core/Event.cpp b/lldb/source/Core/Event.cpp
index c2bf08d..c848cd4 100644
--- a/lldb/source/Core/Event.cpp
+++ b/lldb/source/Core/Event.cpp
@@ -18,6 +18,7 @@
 #include "lldb/Core/State.h"
 #include "lldb/Core/Stream.h"
 #include "lldb/Target/Process.h"
+#include <algorithm>
 
 using namespace lldb;
 using namespace lldb_private;