patch 8.2.5137: cannot build without the +channel feature

Problem:    Cannot build without the +channel feature. (Dominique Pellé)
Solution:   Add #ifdef around ch_log() calls. (closes #10598)

src/os_unix.c

@@ -8323,8 +8323,10 @@ start_timeout(long msec)
 	timer_created = TRUE;
     }
 
+# ifdef FEAT_JOB_CHANNEL
     ch_log(NULL, "setting timeout timer to %d sec %ld nsec",
 	       (int)interval.it_value.tv_sec, (long)interval.it_value.tv_nsec);
+# endif
     ret = timer_settime(timer_id, 0, &interval, NULL);
     if (ret < 0)
 	semsg(_(e_could_not_set_timeout_str), strerror(errno));

src/regexp_bt.c

@@ -3163,8 +3163,10 @@ bt_did_time_out(int *timed_out)
     {
 	if (timed_out != NULL)
 	{
+# ifdef FEAT_JOB_CHANNEL
 	    if (!*timed_out)
 		ch_log(NULL, "BT regexp timed out");
+# endif
 	    *timed_out = TRUE;
 	}
 	return TRUE;

src/regexp_nfa.c

@@ -4248,8 +4248,10 @@ nfa_did_time_out(void)
     {
 	if (nfa_timed_out != NULL)
 	{
+# ifdef FEAT_JOB_CHANNEL
 	    if (!*nfa_timed_out)
 		ch_log(NULL, "NFA regexp timed out");
+# endif
 	    *nfa_timed_out = TRUE;
 	}
 	return TRUE;

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    5137,
 /**/
     5136,
 /**/