Fix typo in gsParam

Author: pavel-alay

kernel/src/main/java/com/itextpdf/kernel/utils/CompareTool.java

@@ -131,7 +131,7 @@ public class CompareTool {
     private static final String undefinedGsPath = "Path to GhostScript is not specified. Please use -DgsExec=<path_to_ghostscript> (e.g. -DgsExec=\"C:/Program Files/gs/gs9.14/bin/gswin32c.exe\")";
     private static final String ignoredAreasPrefix = "ignored_areas_";
 
-    private static final String gsParams = " -dSAFER s-dNOPAUSE -dBATCH -sDEVICE=png16m -r150 -sOutputFile='<outputfile>' '<inputfile>'";
+    private static final String gsParams = " -dSAFER -dNOPAUSE -dBATCH -sDEVICE=png16m -r150 -sOutputFile='<outputfile>' '<inputfile>'";
     private static final String compareParams = " '<image1>' '<image2>' '<difference>'";
 
     private static final String versionRegexp = "(iText\u00ae( pdfX(FA|fa)| DITO)?|iTextSharp\u2122) (\\d+\\.)+\\d+(-SNAPSHOT)?";