fix nimsuggest warning (#13699)

nimsuggest/crashtester.nim

@@ -32,7 +32,7 @@ proc callNimsuggest() =
       if a == DummyEof: break
 
     var line = 0
-    for i in 0..< contents.len:
+    for i in 0 ..< contents.len:
       let slic = contents[0..i]
       writeFile("temp000.nim", slic)
       let (line, col) = getPosition(slic)

nimsuggest/nimsuggest.nim

@@ -97,9 +97,6 @@ const
          "type 'debug' to toggle debug mode on/off\n" &
          "type 'terse' to toggle terse mode on/off"
 
-type
-  EUnexpectedCommand = object of Exception
-
 proc parseQuoted(cmd: string; outp: var string; start: int): int =
   var i = start
   i += skipWhitespace(cmd, i)

nimsuggest/tester.nim

@@ -206,13 +206,13 @@ proc sexpToAnswer(s: SexpNode): string =
       result.add '\t'
       result.add file
       result.add '\t'
-      result.add line
+      result.addInt line
       result.add '\t'
-      result.add col
+      result.addInt col
       result.add '\t'
       result.add doc
       result.add '\t'
-      result.add a[8].getNum
+      result.addInt a[8].getNum
       if a.len >= 10:
         result.add '\t'
         result.add a[9].getStr