[LyX/2.3.x] gcc 12 compilation fixes

[Jean-Marc Lasgouttes]

commit 97dd1c4702cebf47cd55bb2ad10bbc881dcbf6aa
Author: Jean-Marc Lasgouttes <lasgouttes at lyx.org>
Date:   Tue Nov 8 23:58:02 2022 +0100

    gcc 12 compilation fixes
---
 src/insets/InsetListings.cpp |    1 +
 src/lyxfind.cpp              |    2 ++
 2 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/src/insets/InsetListings.cpp b/src/insets/InsetListings.cpp
index 88ab71a..16d4224 100644
--- a/src/insets/InsetListings.cpp
+++ b/src/insets/InsetListings.cpp
@@ -44,6 +44,7 @@
 
 #include "support/regex.h"
 
+#include <cstring>
 #include <sstream>
 
 using namespace std;
diff --git a/src/lyxfind.cpp b/src/lyxfind.cpp
index 51f1b90..12ac16a 100644
--- a/src/lyxfind.cpp
+++ b/src/lyxfind.cpp
@@ -53,6 +53,8 @@
 
 #include "support/regex.h"
 
+#include <iterator>
+
 using namespace std;
 using namespace lyx::support;