Variable name shadowing import symbol

[ChAoS_UnItY (Kyle Lin)]

From vlang/v#17173 and vlang/v#17197, variable should not shadow import symbol, there is 1 potential error found in ved:

• timer.v:62:3

   60 |             continue
   61 |         }
   62 |         time := words[2].trim_space()
      |         ~~~~
   63 |         // println('time=$time')
   64 |         a := time.split(' ')