Add missing include

Fixes: https://gitlab.com/kicad/code/kicad/-/issues/21785
2 months ago · 1ebc7bcffe
1 changed files with 1 additions and 0 deletions
--- a/include/singleton.h
+++ b/include/singleton.h
@ -20,6 +20,7 @@
 #ifndef KICAD_SINGLETON_H
 #define KICAD_SINGLETON_H

+#include <cstdint>
 #include <advanced_config.h>

 class GL_CONTEXT_MANAGER;