Fix bogus jump to "error" label.

if unhash_fd_map() is not done, do not try to do fix_fd_array() .

(cherry picked from commit 9c066e6)

io_wait.h

@@ -591,7 +591,7 @@ inline static int io_watch_del(io_wait_h* h, int fd, int idx,
 
 	if ((fd<0) || (fd>=h->max_fd_no)){
 		LM_CRIT("[%s] invalid fd %d, not in [0, %d)\n", h->name, fd, h->fd_no);
-		goto error;
+		goto error0;
 	}
 	LM_DBG("[%s] io_watch_del op on index %d %d (%p, %d, %d, 0x%x,0x%x) "
 		"fd_no=%d called\n", h->name,idx,fd, h, fd, idx, flags,
@@ -602,19 +602,19 @@ inline static int io_watch_del(io_wait_h* h, int fd, int idx,
 	/* more sanity checks */
 	if (e==0){
 		LM_CRIT("[%s] no corresponding hash entry for %d\n",h->name, fd);
-		goto error;
+		goto error0;
 	}
 	if (e->type==0 /*F_NONE*/){
 		LM_ERR("[%s] trying to delete already erased"
 				" entry %d in the hash(%d, %d, %p) )\n",
 				h->name,fd, e->fd, e->type, e->data);
-		goto error;
+		goto error0;
 	}
 
 	if ((e->flags & sock_flags) == 0) {
 		LM_ERR("BUG - [%s] trying to del fd %d with flags %d %d\n",
 			h->name, fd, e->flags,sock_flags);
-		goto error;
+		goto error0;
 	}
 
 	unhash_fd_map(e,flags,sock_flags,erase);
@@ -735,6 +735,7 @@ inline static int io_watch_del(io_wait_h* h, int fd, int idx,
 	 * "fd_hash" and "fd_array" must remain consistent
 	 */
 	fix_fd_array;
+error0:
 	return -1;
 #undef fix_fd_array
 }