From 765bb3298ea99d318b3db9ef7ca47b33f0824e91 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Sun, 8 Mar 2026 21:06:22 -1000
Subject: [PATCH] [api] Use PROTO_VARINT_PARSE_FAILED constant in parse failure
 returns

Replace magic {0, 0} with {0, PROTO_VARINT_PARSE_FAILED} in parse_slow()
and parse_wide() for consistency with the named sentinel.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 esphome/components/api/proto.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/esphome/components/api/proto.cpp b/esphome/components/api/proto.cpp
index 8959ac7a2a..4f5b3f0918 100644
--- a/esphome/components/api/proto.cpp
+++ b/esphome/components/api/proto.cpp
@@ -38,7 +38,7 @@ ProtoVarIntResult ProtoVarInt::parse_slow(const uint8_t *buffer, uint32_t len) {
 #ifdef USE_API_VARINT64
   return parse_wide(buffer, len, result32);
 #else
-  return {0, 0};
+  return {0, PROTO_VARINT_PARSE_FAILED};
 #endif
 }
 
@@ -53,7 +53,7 @@ ProtoVarIntResult ProtoVarInt::parse_wide(const uint8_t *buffer, uint32_t len, u
       return {result64, i + 1};
     }
   }
-  return {0, 0};
+  return {0, PROTO_VARINT_PARSE_FAILED};
 }
 #endif