Prefix `next' iterator operation with `llvm::'.

Fixes potential ambiguity problems on VS 2010.

Patch by nobled!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110029 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp
index 0edbf43..9ea98ec 100644
--- a/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/lib/Transforms/IPO/GlobalOpt.cpp
@@ -2078,7 +2078,7 @@
         return false;
 
       // The first index must be zero.
-      ConstantInt *CI = dyn_cast<ConstantInt>(*next(CE->op_begin()));
+      ConstantInt *CI = dyn_cast<ConstantInt>(*llvm::next(CE->op_begin()));
       if (!CI || !CI->isZero()) return false;
 
       // The remaining indices must be compile-time known integers within the