Trim trailing spaces of components/libc/posix/io/poll/poll.c

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>

components/libc/posix/io/poll/poll.c

@@ -23,7 +23,7 @@
 #include "poll.h"
 
 
-enum rt_poll_status 
+enum rt_poll_status
 {
     RT_POLL_STAT_INIT,     /**< Poll operation initialization status. */
     RT_POLL_STAT_TRIG,     /**< Poll operation triggered status. */
@@ -31,7 +31,7 @@ enum rt_poll_status
 };
 
 
-struct rt_poll_table 
+struct rt_poll_table
 {
     rt_pollreq_t req;               /**< Poll request. */
     enum rt_poll_status status;     /**< Status of the poll operation. */
@@ -40,7 +40,7 @@ struct rt_poll_table
 };
 
 
-struct rt_poll_node 
+struct rt_poll_node
 {
     struct rt_wqueue_node wqn;     /**< Wait queue node for the poll node. */
     struct rt_poll_table *pt;       /**< Pointer to the parent poll table. */