Tidy up several unbeseeming casts from pointer to intptr_t.

llvm-svn: 55779
diff --git a/llvm/lib/CodeGen/RegAllocLocal.cpp b/llvm/lib/CodeGen/RegAllocLocal.cpp
index 5946e74..d660317 100644
--- a/llvm/lib/CodeGen/RegAllocLocal.cpp
+++ b/llvm/lib/CodeGen/RegAllocLocal.cpp
@@ -44,8 +44,7 @@
   class VISIBILITY_HIDDEN RALocal : public MachineFunctionPass {
   public:
     static char ID;
-    RALocal() : MachineFunctionPass((intptr_t)&ID),
-      StackSlotForVirtReg(-1) {}
+    RALocal() : MachineFunctionPass(&ID), StackSlotForVirtReg(-1) {}
   private:
     const TargetMachine *TM;
     MachineFunction *MF;