Move part of an if condition into an assertion.  NFC.

llvm-svn: 258163
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp
index ccb5663..8ff018f 100644
--- a/llvm/lib/Analysis/ConstantFolding.cpp
+++ b/llvm/lib/Analysis/ConstantFolding.cpp
@@ -731,8 +731,8 @@
                                          Type *ResultTy, const DataLayout &DL,
                                          const TargetLibraryInfo *TLI) {
   Constant *Ptr = Ops[0];
-  if (!Ptr->getType()->getPointerElementType()->isSized() ||
-      !Ptr->getType()->isPointerTy())
+  assert(Ptr->getType()->isPointerTy());
+  if (!Ptr->getType()->getPointerElementType()->isSized())
     return nullptr;
 
   Type *IntPtrTy = DL.getIntPtrType(Ptr->getType());