[LyX/master] Initialize members correctly.

[Jean-Marc Lasgouttes]

commit b08cb7fb30c2dfae0f04db9d474f22c5fbc56114
Author: Jean-Marc Lasgouttes <lasgouttes at lyx.org>
Date:   Mon Jan 22 11:20:06 2024 +0100

    Initialize members correctly.
    
    Spotted by coverity.
---
 src/insets/InsetIndex.cpp |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/insets/InsetIndex.cpp b/src/insets/InsetIndex.cpp
index 4227252..c7e88f0 100644
--- a/src/insets/InsetIndex.cpp
+++ b/src/insets/InsetIndex.cpp
@@ -1631,8 +1631,8 @@ private:
 	std::vector<docstring> terms_; // Up to three entries, in general.
 	docstring sort_as_;
 	docstring command_;
-	bool has_start_range_;
-	bool has_end_range_;
+	bool has_start_range_ = false;
+	bool has_end_range_ = false;
 	docstring see_;
 	vector<docstring> see_alsoes_;