Correct devnull2 flags

.version

@@ -1,3 +1,3 @@
 VERSION_MAJOR=0
 VERSION_MINOR=9
-VERSION_PATCH=0
+VERSION_PATCH=1

tools/r.h

@@ -1,4 +1,4 @@
-// libr 0.2.0 (1dbe1799252e4b97a820e44d38c2726ce8a3af16) (https://github.com/rootmos/libr.git) (2022-11-07T15:06:05+01:00)
+// libr 0.2.0 (c2d53939d7b3587873a08543075063c6590b39bb) (https://github.com/rootmos/libr.git) (2022-11-08T06:46:29+01:00)
 // modules: fail logging now util char devnull
 
 #ifndef LIBR_HEADER
@@ -157,7 +157,7 @@ inline int is_whitespace(char c)
 // libr: devnull.h
 
 int devnull(int flags);
-void devnull_to(int fd);
+void devnull2(int fd, int flags);
 #endif // LIBR_HEADER
 
 #ifdef LIBR_IMPLEMENTATION
@@ -249,7 +249,6 @@ const char* now_iso8601_compact(void)
 
 int devnull(int flags)
 {
-    flags |= O_CLOEXEC;
     int fd = open("/dev/null", flags);
     CHECK(fd, "open(/dev/null, %d)", flags);
     return fd;

tools/strace-log-watch.c

@@ -317,7 +317,7 @@ static void trace_init(struct trace* t, const char* dir, const char* name)
         r = sigprocmask(SIG_UNBLOCK, &state.sm, NULL);
         CHECK(r, "sigprocmask");
 
-        devnull2(0, 0);
+        devnull2(0, O_RDONLY);
         r = dup2(pipefd[1], 1); CHECK(r, "dup2(.., 1)");
 
         r = execlp("tail", "tail", "--lines=+1", "--follow", path, NULL);