Move operator==(const GncGUID&, const GncGUID&) to guid.[ch]pp.

libgnucash/engine/gnc-option-impl.cpp

@@ -223,12 +223,6 @@ GncOptionQofInstanceValue::reset_default_value()
     m_value = m_default_value;
 }
 
-static bool
-operator==(const GncGUID& l, const GncGUID& r)
-{
-    return guid_equal(&l, &r);
-}
-
 bool
 GncOptionQofInstanceValue::is_changed() const noexcept
 {

libgnucash/engine/guid.cpp

@@ -23,6 +23,7 @@
 \********************************************************************/
 
 #include "guid.hpp"
+#include "guid.h"
 
 #ifdef HAVE_CONFIG_H
 # include <config.h>
@@ -431,3 +432,9 @@ GUID::operator GncGUID () const noexcept
 }
 
 } // namespace gnc
+
+bool
+operator==(const GncGUID& lhs, const GncGUID& rhs)
+{
+    return gnc::GUID{lhs} == gnc::GUID{rhs};
+}

libgnucash/engine/guid.hpp

@@ -62,5 +62,7 @@ bool operator != (GUID const &, GUID const &) noexcept;
 bool operator == (GUID const &, GncGUID const &) noexcept;
 
 
-}
+} // namespace gnc
+
+bool operator== (const GncGUID&, const GncGUID&);
 #endif