Put the #include for a module first.

llvm-svn: 31958
diff --git a/llvm/lib/CodeGen/LiveInterval.cpp b/llvm/lib/CodeGen/LiveInterval.cpp
index 703e31b..0e75bfb 100644
--- a/llvm/lib/CodeGen/LiveInterval.cpp
+++ b/llvm/lib/CodeGen/LiveInterval.cpp
@@ -18,8 +18,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/ADT/STLExtras.h"
 #include "llvm/CodeGen/LiveInterval.h"
+#include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/Streams.h"
 #include "llvm/Target/MRegisterInfo.h"
 #include <algorithm>