Fix type cast warnings

src/magic.cpp

@@ -1902,7 +1902,8 @@ static void draw_spellbook_info( const spell_type &sp, uilist *menu )
     }
 
     if( sp.min_duration != 0 && sp.max_duration != 0 ) {
-        rows.emplace_back( _( "Duration" ), sp.min_duration, sp.duration_increment, sp.max_duration );
+        rows.emplace_back( _( "Duration" ), sp.min_duration, static_cast<float>( sp.duration_increment ),
+                           sp.max_duration );
     }
 
     rows.emplace_back( _( "Cast Cost" ), sp.base_energy_cost, sp.energy_increment,

src/mission.cpp

@@ -372,7 +372,7 @@ bool mission::is_complete( const character_id &_npc_id ) const
 
             int total_match = std::accumulate( matches.begin(), matches.end(), 0,
             []( const std::size_t previous, const std::pair<const std::string, std::size_t> &p ) {
-                return previous + p.second;
+                return static_cast<int>( previous + p.second );
             } );
 
             if( total_match >= ( type->item_count ) ) {

src/npctrade.cpp

@@ -90,7 +90,7 @@ std::vector<item_pricing> npc_trading::init_selling( npc &np )
         const int price = it.price( true );
         int val = np.value( it );
         if( np.wants_to_sell( it, val, price ) ) {
-            result.emplace_back( np, i->front(), val, i->size() );
+            result.emplace_back( np, i->front(), val, static_cast<int>( i->size() ) );
         }
     }
 

src/vehicle.cpp

@@ -4450,7 +4450,7 @@ void vehicle::consume_fuel( int load, const int t_seconds, bool skip_electric )
 
         double amnt_precise_j = static_cast<double>( fuel_pr.second ) * t_seconds;
         amnt_precise_j *= load / 1000.0 * ( 1.0 + st * st * 100.0 );
-        auto inserted = fuel_used_last_turn.insert( { ft, 0 } );
+        auto inserted = fuel_used_last_turn.insert( { ft, 0.0f } );
         inserted.first->second += amnt_precise_j;
         double remainder = fuel_remainder[ ft ];
         amnt_precise_j -= remainder;

src/weather.cpp

@@ -638,7 +638,7 @@ std::string weather_forecast( const point &abs_sm_pos )
             day = _( "Today" );
             started_at_night = false;
         }
-        if( d > 0 && started_at_night != d % 2 ) {
+        if( d > 0 && static_cast<int>( started_at_night ) != d % 2 ) {
             day = string_format( pgettext( "Mon Night", "%s Night" ), to_string( day_of_week( c ) ) );
         } else {
             day = to_string( day_of_week( c ) );