minor code simplification

Author: nunoplopes

cpp2rust/converter/converter.cpp

@@ -231,12 +231,10 @@ std::string Converter::ConvertFreshObject(clang::Expr *expr) {
 
 std::string Converter::ConvertPointerReceiver(clang::Expr *arg,
                                               std::string_view param_type) {
-  auto *unwrapped = clang::IgnoreExprNodes(
-      arg, clang::IgnoreParensSingleStep, clang::IgnoreImplicitCastsSingleStep);
-  auto receiver = clang::isa<clang::MaterializeTemporaryExpr>(unwrapped)
-                      ? ConvertTemporaryPointer(arg, std::nullopt)
-                      : ConvertFreshObject(arg);
-  return std::format("({} as {})", receiver, param_type);
+  auto ptr = clang::isa<clang::MaterializeTemporaryExpr>(arg->IgnoreImpCasts())
+                 ? ConvertTemporaryPointer(arg, std::nullopt)
+                 : ConvertFreshObject(arg);
+  return std::format("({} as {})", ptr, param_type);
 }
 
 std::string Converter::ConvertTemporaryPointer(