fix weapon steadiness bar not working

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due to a bug the bar only shows up when steadiness is full, problem was
that the calculated steadiness was stored in an int while the value was
a double resulting in either empty or full bar.
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# Example: fixes #1234, closes #2345, resolves #3456, references #4567
fixes #69954

src/ranged.cpp

@@ -1707,7 +1707,7 @@ static std::vector<aim_type_prediction> calculate_ranged_chances(
     const recoil_prediction aim_to_selected = predict_recoil( you, weapon, target,
             ui.get_sight_dispersion(), ui.get_selected_aim_type(), you.recoil );
 
-    const int selected_steadiness = calc_steadiness( you, weapon, pos, aim_to_selected.recoil );
+    const double selected_steadiness = calc_steadiness( you, weapon, pos, aim_to_selected.recoil );
 
     const int throw_moves = throw_cost( you, weapon );