BUG/MINOR: proxy: Use .disabled field as a bitfield as documented

.disabled field in the proxy structure is documented to be a bitfield. So
use it as a bitfield. This change was introduced to the 2.5, by commit
8e765b86f ("MINOR: proxy: disabled takes a stopping and a disabled state").

No backport is needed except if the above commit is backported.

src/cfgparse-listen.c

@@ -595,7 +595,7 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm)
 	else if (strcmp(args[0], "disabled") == 0) {  /* disables this proxy */
 		if (alertif_too_many_args(0, file, linenum, args, &err_code))
 			goto out;
-		curproxy->disabled = PR_DISABLED;
+		curproxy->disabled |= PR_DISABLED;
 	}
 	else if (strcmp(args[0], "enabled") == 0) {  /* enables this proxy (used to revert a disabled default) */
 		if (alertif_too_many_args(0, file, linenum, args, &err_code))

src/cfgparse.c

@@ -1019,7 +1019,7 @@ int cfg_parse_peers(const char *file, int linenum, char **args, int kwm)
 		stktables_list = t;
 	}
 	else if (strcmp(args[0], "disabled") == 0) {  /* disables this peers section */
-		curpeers->disabled = PR_DISABLED;
+		curpeers->disabled |= PR_DISABLED;
 	}
 	else if (strcmp(args[0], "enabled") == 0) {  /* enables this peers section (used to revert a disabled default) */
 		curpeers->disabled = 0;

src/mworker.c

@@ -443,7 +443,7 @@ void mworker_cleanlisteners()
 		}
 		/* if the proxy shouldn't be in the master, we stop it */
 		if (!listen_in_master)
-			curproxy->disabled = PR_DISABLED;
+			curproxy->disabled |= PR_DISABLED;
 	}
 }
 

src/proxy.c

@@ -1823,7 +1823,7 @@ void proxy_cond_disable(struct proxy *p)
 	if (p->li_ready + p->li_paused > 0)
 		return;
 
-	p->disabled = PR_STOPPED;
+	p->disabled |= PR_STOPPED;
 
 	/* Note: syslog proxies use their own loggers so while it's somewhat OK
 	 * to report them being stopped as a warning, we must not spam their log