Simplify starting_value

src/MOI_wrapper.jl

@@ -142,23 +142,7 @@ function starting_value(optimizer::Optimizer{T}, i) where {T}
         return optimizer.starting_values[i]
     else
         v = optimizer.variables
-        has_lower_bound = !iszero(v.set_mask[i] & MOI.Utilities._LOWER_BOUND_MASK)
-        has_upper_bound = !iszero(v.set_mask[i] & MOI.Utilities._UPPER_BOUND_MASK)
-        if has_lower_bound && has_upper_bound
-            if zero(T) <= v.lower[i]
-                return v.lower[i]
-            elseif v.upper[i] <= zero(T)
-                return v.upper[i]
-            else
-                return zero(T)
-            end
-        elseif has_lower_bound
-            return max(zero(T), v.lower[i])
-        elseif has_upper_bound
-            return min(zero(T), v.upper[i])
-        else
-            return zero(T)
-        end
+        return min(max(zero(T), v.lower[i]), v.upper[i])
     end
 end