From 2c5c3dbaefc7c972c9e76caf2c3c406aa601c42c Mon Sep 17 00:00:00 2001
From: "Earle F. Philhower, III" <earlephilhower@yahoo.com>
Date: Tue, 1 Oct 2019 10:28:36 -0700
Subject: [PATCH] Revert "Speed up empty String creation slightly (#6573)"

This reverts commit 1aeea124b358c3dc63e1c6fb96376695cf24840b.
---
 cores/esp8266/WString.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cores/esp8266/WString.h b/cores/esp8266/WString.h
index 8c970abf14..558d1da858 100644
--- a/cores/esp8266/WString.h
+++ b/cores/esp8266/WString.h
@@ -53,7 +53,7 @@ class String {
         // if the initial value is null or invalid, or if memory allocation
         // fails, the string will be marked as invalid (i.e. "if (s)" will
         // be false).
-        String(const char *cstr = nullptr);
+        String(const char *cstr = "");
         String(const String &str);
         String(const __FlashStringHelper *str);
 #ifdef __GXX_EXPERIMENTAL_CXX0X__