From e39ea0e3c82727a2df61a47cda22637c7bfb5457 Mon Sep 17 00:00:00 2001
From: Sadie Powell <sadie@witchery.services>
Date: Sat, 9 May 2020 01:42:14 +0100
Subject: [PATCH] regex_stdlib: Don't copy std::regex_error when catching it.

---
 src/modules/extra/m_regex_stdlib.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/modules/extra/m_regex_stdlib.cpp b/src/modules/extra/m_regex_stdlib.cpp
index 149ff3b38..b9602fe01 100644
--- a/src/modules/extra/m_regex_stdlib.cpp
+++ b/src/modules/extra/m_regex_stdlib.cpp
@@ -33,10 +33,11 @@ class StdRegex : public Regex
  public:
 	StdRegex(const std::string& rx, std::regex::flag_type fltype) : Regex(rx)
 	{
-		try{
+		try
+		{
 			regexcl.assign(rx, fltype | std::regex::optimize);
 		}
-		catch(std::regex_error rxerr)
+		catch(const std::regex_error& rxerr)
 		{
 			throw RegexException(rx, rxerr.what());
 		}
-- 
2.39.2