Fixed error caused by canceling the SQL statement before it is used

main.go

@@ -151,22 +151,20 @@ func getHistory(c *gin.Context) {
 		var tempUser loginOutput
 		stmt, err := db.Prepare("SELECT * FROM users WHERE uid=?")
 		checkErr(err)
-		err = stmt.Close()
-		checkErr(err)
 		err = stmt.QueryRow(history[i].UID).Scan(&tempUser.UID, &tempUser.Name, &tempUser.Password, &tempUser.Role)
 		checkErr(err)
 		tempHistory.User = tempUser.Name
+		stmt.Close()
 
 		// get the task name and points
 		var tempTask task
 		stmt, err = db.Prepare("SELECT * FROM activities WHERE taskId=?")
 		checkErr(err)
-		err = stmt.Close()
-		checkErr(err)
 		err = stmt.QueryRow(history[i].TID).Scan(&tempTask.TID, &tempTask.Name, &tempTask.Points)
 		checkErr(err)
 		tempHistory.Task = tempTask.Name
 		tempHistory.PointsGained = tempTask.Points
+		stmt.Close()
 
 		tempHistory.Time = history[i].Time