[clang][Interp][NFC] Fix some build warnings

Fixes:
/buildbot/worker/arc-folder/llvm-project/clang/lib/AST/Interp/Disasm.cpp:143:25: warning: cast from type 'const clang::interp::Block*' to type 'void*' casts away qualifiers [-Wcast-qual]
/buildbot/worker/arc-folder/llvm-project/clang/lib/AST/Interp/Disasm.cpp:271:23: warning: cast from type 'const clang::interp::Block*' to type 'void*' casts away qualifiers [-Wcast-qual]

clang/lib/AST/Interp/Disasm.cpp

@@ -140,7 +140,7 @@ LLVM_DUMP_METHOD void Program::dump(llvm::raw_ostream &OS) const {
     const Descriptor *Desc = G->block()->getDescriptor();
     Pointer GP = getPtrGlobal(GI);
 
-    OS << GI << ": " << (void *)G->block() << " ";
+    OS << GI << ": " << (const void *)G->block() << " ";
     {
       ColorScope SC(OS, true,
                     GP.isInitialized()
@@ -268,7 +268,7 @@ LLVM_DUMP_METHOD void Record::dump(llvm::raw_ostream &OS, unsigned Indentation,
 LLVM_DUMP_METHOD void Block::dump(llvm::raw_ostream &OS) const {
   {
     ColorScope SC(OS, true, {llvm::raw_ostream::BRIGHT_BLUE, true});
-    OS << "Block " << (void *)this << "\n";
+    OS << "Block " << (const void *)this << "\n";
   }
   unsigned NPointers = 0;
   for (const Pointer *P = Pointers; P; P = P->Next) {