Potential fix for code scanning alert no. 404: Incorrect conversion between integer types

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: joel-rieke

sql/system_enumtype.go

@@ -16,6 +16,7 @@ package sql
 
 import (
 	"math"
+	_ "math"
 	"reflect"
 	"strings"
 
@@ -93,7 +94,10 @@ func (t systemEnumType) Convert(v interface{}) (interface{}, error) {
 	case uint32:
 		return t.Convert(int(value))
 	case int64:
-		return t.Convert(int(value))
+		if value >= math.MinInt && value <= math.MaxInt {
+			return t.Convert(int(value))
+		}
+		return nil, ErrInvalidSystemVariableValue.New(t.varName, value)
 	case uint64:
 		if value <= math.MaxInt {
 			return t.Convert(int(value))