OptionalFoldLevel uses no members so mark static.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/Editor.h b/src/Editor.h
index 37df93c93..d6ee0a80f 100644
--- a/src/Editor.h
+++ b/src/Editor.h
@@ -641,7 +641,7 @@ protected:	// ScintillaBase subclass needs access to much of Editor
 		return Point(static_cast<XYPOSITION>(wParam) - vs.ExternalMarginWidth(), static_cast<XYPOSITION>(lParam));
 	}
 
-	constexpr std::optional<FoldLevel> OptionalFoldLevel(Scintilla::sptr_t lParam) {
+	static constexpr std::optional<FoldLevel> OptionalFoldLevel(Scintilla::sptr_t lParam) {
 		if (lParam >= 0) {
 			return static_cast<FoldLevel>(lParam);
 		}