BUG#12532: Fixes after review

sql/log_event.cc:
  Review fixes
sql/sql_parse.cc:
  Review fixes

sql/log_event.cc

@@ -1330,14 +1330,13 @@ Query_log_event::Query_log_event(const char* buf, uint event_len,
   
   if (!(start= data_buf = (char*) my_malloc(catalog_len + 1 +
                                             time_zone_len + 1 +
-                                            data_len + 1 +
-#ifndef MYSQL_CLIENT
-#ifdef HAVE_QUERY_CACHE
-					    QUERY_CACHE_FLAGS_SIZE +
-#endif
+                                            data_len + 1
+#if !defined(MYSQL_CLIENT) && defined(HAVE_QUERY_CACHE)
+					    + QUERY_CACHE_FLAGS_SIZE +
+					    db_len + 1
 #endif
-					    db_len + 1, MYF(MY_WME))))
-    DBUG_VOID_RETURN;
+					    , MYF(MY_WME))))
+      DBUG_VOID_RETURN;
   if (catalog_len)                                  // If catalog is given
   {
     if (likely(catalog_nz)) // true except if event comes from 5.0.0|1|2|3.

sql/sql_parse.cc

@@ -1218,7 +1218,8 @@ extern "C" pthread_handler_decl(handle_bootstrap,arg)
       length--;
     buff[length]=0;
     thd->query_length=length;
-    thd->query= thd->memdup_w_gap(buff, length+1, thd->db_length+1);
+    thd->query= thd->memdup_w_gap(buff, length+1, 
+				  thd->db_length+1+QUERY_CACHE_FLAGS_SIZE);
     thd->query[length] = '\0';
     /*
       We don't need to obtain LOCK_thread_count here because in bootstrap