Cleanup: const correctness.

[dcpomatic.git] / src / lib / collator.h

diff --git a/src/lib/collator.h b/src/lib/collator.h
index 3762f240013fe83847ca212f05d04c921304e8eb..d422781248b063bc0d9f0a54e7d12d3a76fda9d1 100644 (file)
--- a/src/lib/collator.h
+++ b/src/lib/collator.h
@@ -38,7 +38,7 @@ public:
        Collator(Collator const &) = delete;
        Collator& operator=(Collator const&) = delete;
 
-       int compare(std::string const& utf8_a, std::string const& utf8_b);
+       int compare(std::string const& utf8_a, std::string const& utf8_b) const;
 
 private:
        UCollator* _collator = nullptr;