From 1db4ae96b1a1fa7c5b383a505a0b0b74b836551a Mon Sep 17 00:00:00 2001
From: starling13 <starling13@mail.ru>
Date: Sun, 7 Apr 2019 13:01:42 +0300
Subject: util/hex.h: Reserve result space in hex_encode()

Reserve enough space for the result of hex_encode() to eliminate reallocations
---
 src/util/hex.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/util/hex.h b/src/util/hex.h
index df22539a5..31bcaa2ba 100644
--- a/src/util/hex.h
+++ b/src/util/hex.h
@@ -26,6 +26,8 @@ static const char hex_chars[] = "0123456789abcdef";
 static inline std::string hex_encode(const char *data, unsigned int data_size)
 {
 	std::string ret;
+	ret.reserve(data_size * 2);
+	
 	char buf2[3];
 	buf2[2] = '\0';
 
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