strace.c: move argc+daemonized check to tracing_backend_init

This check is also specific to the ptrace tracing backend.

* strace.c (init): Mave !argc && daemonized_tracer check...
(tracing_backend_init): ...here.

1 files changed, 3 insertions, 4 deletions

diff --git a/strace.c b/strace.c
index ab93dead3..fd235e131 100644
--- a/strace.c
+++ b/strace.c
@@ -1626,6 +1626,9 @@ tracing_backend_init(int argc, char *argv[])
 	if (!nprocs && !argc)
 		error_msg_and_help("must have PROG [ARGS] or -p PID");
 
+	if (!argc && daemonized_tracer)
+		error_msg_and_help("PROG [ARGS] must be specified with -D");
+
 	if (followfork)
 		ptrace_setoptions |= PTRACE_O_TRACECLONE |
 				     PTRACE_O_TRACEFORK |
@@ -1837,10 +1840,6 @@ init(int argc, char *argv[])
 	if (argc < 0)
 		error_msg_and_help("must have command line arguments");
 
-	if (!argc && daemonized_tracer) {
-		error_msg_and_help("PROG [ARGS] must be specified with -D");
-	}
-
 	if (optF) {
 		if (followfork) {
 			error_msg("deprecated option -F ignored");