[clang][bytecode][NFC] Make Program::getNativePointer() const (llvm#169502)

Author: tbaederr

clang/lib/AST/ByteCode/Program.cpp

@@ -27,7 +27,7 @@ unsigned Program::getOrCreateNativePointer(const void *Ptr) {
   return It->second;
 }
 
-const void *Program::getNativePointer(unsigned Idx) {
+const void *Program::getNativePointer(unsigned Idx) const {
   return NativePointers[Idx];
 }
 

clang/lib/AST/ByteCode/Program.h

@@ -58,7 +58,7 @@ class Program final {
   unsigned getOrCreateNativePointer(const void *Ptr);
 
   /// Returns the value of a marshalled native pointer.
-  const void *getNativePointer(unsigned Idx);
+  const void *getNativePointer(unsigned Idx) const;
 
   /// Emits a string literal among global data.
   unsigned createGlobalString(const StringLiteral *S,