main/asterisk.c: Reverse #if statement in listener() to fix code folding.

listener() opens the same code block in two places (#if and #else).  This
confuses some folding editors causing it to think that an extra code block
was opened.  Folding in 'geany' causes all code after listener() to be
folded as if it were part of that procedure.

ASTERISK-24813 #close

Change-Id: I4b8c766e6c91e327dd445e8c18f8a6f268acd961

main/asterisk.c

@@ -1608,15 +1608,14 @@ static void *listener(void *unused)
 			if (errno != EINTR)
 				ast_log(LOG_WARNING, "Accept returned %d: %s\n", s, strerror(errno));
 		} else {
-#if !defined(SO_PASSCRED)
-			{
-#else
+#if defined(SO_PASSCRED)
 			int sckopt = 1;
 			/* turn on socket credentials passing. */
 			if (setsockopt(s, SOL_SOCKET, SO_PASSCRED, &sckopt, sizeof(sckopt)) < 0) {
 				ast_log(LOG_WARNING, "Unable to turn on socket credentials passing\n");
-			} else {
+			} else
 #endif
+			{
 				for (x = 0; x < AST_MAX_CONNECTS; x++) {
 					if (consoles[x].fd >= 0) {
 						continue;