fixed "condition is always false" warnings

sql/sql_parse.cc

@@ -1627,9 +1627,8 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
 	break;
       mysql_log.write(thd,command,packet);
       bzero(&create_info, sizeof(create_info));
-      if (mysql_create_db(thd, (lower_case_table_names == 2 ? alias : db),
-                          &create_info, 0) < 0)
-        error= TRUE;
+      error= mysql_create_db(thd, (lower_case_table_names == 2 ? alias : db),
+                             &create_info, 0);
       break;
     }
   case COM_DROP_DB:				// QQ: To be removed
@@ -1652,9 +1651,8 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
 	break;
       }
       mysql_log.write(thd,command,db);
-      if (mysql_rm_db(thd, (lower_case_table_names == 2 ? alias : db),
-                      0, 0) < 0)
-        error= TRUE;
+      error= mysql_rm_db(thd, (lower_case_table_names == 2 ? alias : db),
+                         0, 0) ;
       break;
     }
 #ifndef EMBEDDED_LIBRARY