Tidy up several unbeseeming casts from pointer to intptr_t.

llvm-svn: 55779
diff --git a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
index 18f5f0c..8810edb 100644
--- a/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
+++ b/llvm/lib/Transforms/Scalar/MemCpyOptimizer.cpp
@@ -300,7 +300,7 @@
     bool runOnFunction(Function &F);
   public:
     static char ID; // Pass identification, replacement for typeid
-    MemCpyOpt() : FunctionPass((intptr_t)&ID) { }
+    MemCpyOpt() : FunctionPass(&ID) {}
 
   private:
     // This transformation requires dominator postdominator info