Tidy up several unbeseeming casts from pointer to intptr_t.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55779 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Scalar/LoopUnroll.cpp

@@ -42,7 +42,7 @@ namespace {
   class VISIBILITY_HIDDEN LoopUnroll : public LoopPass {
   public:
     static char ID; // Pass ID, replacement for typeid
-    LoopUnroll() : LoopPass((intptr_t)&ID) {}
+    LoopUnroll() : LoopPass(&ID) {}
 
     /// A magic value for use with the Threshold parameter to indicate
     /// that the loop unroll should be performed regardless of how much