sanity check: do not allow mask files or increment w/ --skip/--limit

docs/changes.txt

@@ -25,6 +25,7 @@
 - Add support for --outfile (short -o) to be used together with --stdout
 - Skip periodic status output whenever --stdout is used together with stdin mode, but no outfile was specified
 - Show error message if --show is used together with --outfile-autohex-disable (this is currently not supported)
+- Show error message if --skip/--limit is used together with mask files or --increment
 
 ##
 ## Bugs

src/hashcat.c

@@ -18914,9 +18914,24 @@ int main (int argc, char **argv)
         qsort (induction_dictionaries, induction_dictionaries_cnt, sizeof (char *), sort_by_mtime);
       }
 
+      /**
+       * prevent the user from using --skip/--limit together w/ maskfile and or dictfile
+       */
+
+      if (skip != 0 || limit != 0)
+      {
+        if ((maskcnt > 1) || (dictcnt > 1))
+        {
+          log_error ("ERROR: --skip/--limit are not supported with --increment or mask files");
+
+          return -1;
+        }
+      }
+
       /**
        * prevent the user from using --keyspace together w/ maskfile and or dictfile
        */
+
       if (keyspace == 1)
       {
         if ((maskcnt > 1) || (dictcnt > 1))