From f34dde32d10413d0540c8cd91bf192267a619697 Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Sun, 22 Jul 2018 15:36:30 -0400
Subject: [PATCH] string_util: Use emplace_back() in SplitString() instead of
 push_back()

This is equivalent to doing:

push_back(std::string(""));

which is likely not to cause issues, assuming a decent std::string
implementation with small-string optimizations implemented in its
design, however it's still a little unnecessary to copy that buffer
regardless. Instead, we can use emplace_back() to directly construct the
empty string within the std::vector instance, eliminating any possible
overhead from the copy.
---
 src/common/string_util.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/common/string_util.cpp b/src/common/string_util.cpp
index f7ce3d93c..670c857dd 100644
--- a/src/common/string_util.cpp
+++ b/src/common/string_util.cpp
@@ -230,8 +230,9 @@ void SplitString(const std::string& str, const char delim, std::vector<std::stri
     std::istringstream iss(str);
     output.resize(1);
 
-    while (std::getline(iss, *output.rbegin(), delim))
-        output.push_back("");
+    while (std::getline(iss, *output.rbegin(), delim)) {
+        output.emplace_back();
+    }
 
     output.pop_back();
 }