evtranalyze: don't try to open stdin by default

We don't handle that correctly yet, so error out instead. A
lot of people were getting a crash on their first run b/c
they didn't specify an input file.

diff --git a/usr.bin/evtranalyze/evtranalyze.c b/usr.bin/evtranalyze/evtranalyze.c
index 59d7b2c..5666ebc 100644 (file)
--- a/usr.bin/evtranalyze/evtranalyze.c
+++ b/usr.bin/evtranalyze/evtranalyze.c
@@ -88,7 +88,7 @@ struct command {
 };
 
 evtr_t evtr;
-char *opt_infile;
+static char *opt_infile;
 unsigned evtranalyze_debug;
 
 static
@@ -953,7 +953,9 @@ main(int argc, char **argv)
        if (argc == 0) {
                err(2, "need to specify a command\n");
        }
-       if (!opt_infile || !strcmp(opt_infile, "-")) {
+       if (!opt_infile) {
+               err(2, "you need to specify an input file\n");
+       } else if (!strcmp(opt_infile, "-")) {
                inf = stdin;
        } else {
                inf = fopen(opt_infile, "r");