From 8ec76405b92ada0a5b4c365dbcd614161ff518be Mon Sep 17 00:00:00 2001
From: chuck todd <stickbreaker@users.noreply.github.com>
Date: Thu, 14 Feb 2019 05:09:05 -0700
Subject: [PATCH] Fix compile warning, esp32-hal-i2c.c (#2434)

@tread-Qualitrol discovered this error.
---
 cores/esp32/esp32-hal-i2c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cores/esp32/esp32-hal-i2c.c b/cores/esp32/esp32-hal-i2c.c
index 780020f0215..efb4aefa51a 100644
--- a/cores/esp32/esp32-hal-i2c.c
+++ b/cores/esp32/esp32-hal-i2c.c
@@ -451,7 +451,7 @@ static void IRAM_ATTR i2cTriggerDumps(i2c_t * i2c, uint8_t trigger, const char l
 static void i2cApbChangeCallback(void * arg, apb_change_ev_t ev_type, uint32_t old_apb, uint32_t new_apb){
     i2c_t* i2c = (i2c_t*) arg; // recover data
     if(i2c == NULL) {  // point to peripheral control block does not exits
-        return false;
+        return;
     }
     uint32_t oldFreq=0;
     switch(ev_type){