BUG#59549, fix compiler error on Windows

sql/log.cc

@@ -5995,7 +5995,7 @@ int TC_LOG_MMAP::open(const char *opt_name)
   {
     pg->next=pg+1;
     pg->waiters=0;
-    pg->state=POOL;
+    pg->state=PS_POOL;
     mysql_mutex_init(key_PAGE_lock, &pg->lock, MY_MUTEX_INIT_FAST);
     mysql_cond_init(key_PAGE_cond, &pg->cond, 0);
     pg->start=(my_xid *)(data + i*tc_log_page_size);
@@ -6169,7 +6169,7 @@ int TC_LOG_MMAP::log_xid(THD *thd, my_xid xid)
   cookie= (ulong)((uchar *)p->ptr - data);      // can never be zero
   *p->ptr++= xid;
   p->free--;
-  p->state= DIRTY;
+  p->state= PS_DIRTY;
 
   /* to sync or not to sync - this is the question */
   mysql_mutex_unlock(&LOCK_active);
@@ -6181,13 +6181,13 @@ int TC_LOG_MMAP::log_xid(THD *thd, my_xid xid)
     p->waiters++;
     /*
       note - it must be while (), not do ... while () here
-      as p->state may be not DIRTY when we come here
+      as p->state may be not PS_DIRTY when we come here
     */
-    while (p->state == DIRTY && syncing)
+    while (p->state == PS_DIRTY && syncing)
       mysql_cond_wait(&p->cond, &LOCK_sync);
     p->waiters--;
-    err= p->state == ERROR;
-    if (p->state != DIRTY)                   // page was synced
+    err= p->state == PS_ERROR;
+    if (p->state != PS_DIRTY)                   // page was synced
     {
       if (p->waiters == 0)
         mysql_cond_signal(&COND_pool);       // in case somebody's waiting
@@ -6225,7 +6225,7 @@ int TC_LOG_MMAP::sync()
   pool_last->next=syncing;
   pool_last=syncing;
   syncing->next=0;
-  syncing->state= err ? ERROR : POOL;
+  syncing->state= err ? PS_ERROR : PS_POOL;
   mysql_cond_broadcast(&syncing->cond);      // signal "sync done"
   mysql_cond_signal(&COND_pool);             // in case somebody's waiting
   mysql_mutex_unlock(&LOCK_pool);

sql/log.h

@@ -63,9 +63,9 @@ class TC_LOG_MMAP: public TC_LOG
 {
   public:                // only to keep Sun Forte on sol9x86 happy
   typedef enum {
-    POOL,                 // page is in pool
-    ERROR,                // last sync failed
-    DIRTY                 // new xids added since last sync
+    PS_POOL,                 // page is in pool
+    PS_ERROR,                // last sync failed
+    PS_DIRTY                 // new xids added since last sync
   } PAGE_STATE;
 
   private: