[hackers] [sbase] Small style-fix in cat.c || FRIGN

[git]

commit ca1d32c87329d0b95788a84ac831200c9188786d
Author: FRIGN <d...@frign.de>
Date:   Mon Mar 16 10:36:36 2015 +0100

    Small style-fix in cat.c

diff --git a/cat.c b/cat.c
index 1890e49..b50380c 100644
--- a/cat.c
+++ b/cat.c
@@ -25,7 +25,7 @@ main(int argc, char *argv[])
                usage();
        } ARGEND;
 
-       if (argc == 0) {
+       if (!argc) {
                concat(stdin, "<stdin>", stdout, "<stdout>");
        } else {
                for (; *argv; argc--, argv++) {