[hackers] [sbase] comm: minor optimization || Hiltjo Posthuma

[git]

commit 44298e54e6a8c0e479f011e3d2e66095465e2675
Author: Hiltjo Posthuma <hil...@codemadness.org>
Date:   Fri Mar 27 15:53:46 2015 +0100

    comm: minor optimization

diff --git a/comm.c b/comm.c
index 84c9fb3..ac60d0d 100644
--- a/comm.c
+++ b/comm.c
@@ -66,7 +66,7 @@ main(int argc, char *argv[])
                                continue;
                        if (ferror(fp[i]))
                                eprintf("getline %s:", argv[i]);
-                       if (diff && strlen(line[!i]))
+                       if (diff && line[!i][0])
                                printline(!i, line[!i]);
                        while (getline(&line[!i], &linelen[!i], fp[!i]) >= 0)
                                printline(!i, line[!i]);