captcha: Less hints and warnings. Recreate palette icon.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@8121 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/captcha/images/make_res.bat

@@ -1 +1 @@
-lazres ../source/captcha_images.res tcaptcha.png tcaptcha_150.png tcaptcha_200.png
+lazres ../source/captcha_images.res tcaptchalabel.png tcaptchalabel_150.png tcaptchalabel_200.png

components/captcha/source/captchactrl.pas

@@ -11,7 +11,7 @@
 unit CaptchaCtrl;
 
 {$mode OBJFPC}{$H+}
-
+{$WARN 6058 off : Call to subroutine "$1" marked as inline is not inlined}
 interface
 
 uses
@@ -472,8 +472,7 @@ end;
 
 procedure TCaptchaLabel.InitText(ACount: Integer; KeepExisting: Boolean);
 var
-  i, j, n: Integer;
-  ok: Boolean;
+  i, n: Integer;
   validChars: String;
   co: TCaptchaCharsOption;
 begin