Fix deprecated enum arithmetic

FT/FTMonitors/src/TAEHandler.h

@@ -43,7 +43,7 @@ public:
       , m_TAEindex( owner, "TAEIndex", fmt::format( "TAE events{};TAE index;Events", extraInfo ),
                     Axis{2 * maxTAEHalfWindow + 1, -0.5f, 2 * maxTAEHalfWindow + 0.5f} )
       , m_TAEErrors{owner, "TAEErrors", fmt::format( "TAE errors{};TAE errors;Events", extraInfo ),
-                    Axis{NUM_ERRORS, -0.5f, NUM_ERRORS - 0.5f}}
+                    Axis{NUM_ERRORS, -0.5f, static_cast<float>( NUM_ERRORS ) - 0.5f}}
       , m_tae_bunch_id_not_set{owner, "TAE bunch IDs are not set"} {}
 
   std::optional<int> fromOdin( const LHCb::ODIN& odin, LHCb::span<unsigned int> bunchIds ) const {

Tr/TrackExtrapolators/src/BasisFunctions.h

@@ -26,8 +26,8 @@ namespace BasisFunctions {
   template <typename BasicFunctionA, typename BasicFunctionB>
   struct BasicFunctionProduct {
     enum {
-      NumArgs   = BasicFunctionA::NumArgs + BasicFunctionB::NumArgs,
-      NumValues = BasicFunctionA::NumValues * BasicFunctionB::NumValues
+      NumArgs   = static_cast<int>( BasicFunctionA::NumArgs ) + static_cast<int>( BasicFunctionB::NumArgs ),
+      NumValues = static_cast<int>( BasicFunctionA::NumValues ) * static_cast<int>( BasicFunctionB::NumValues )
     };
     typedef typename BasicFunctionA::ArgType             ArgType;
     typedef typename BasicFunctionA::ValueType           ValueType;