Merge a change from MySQL AB:

ChangeSet@1.2598.6.1  2007-11-07 12:59:22-07:00  tsmith@hindu.god

Cast away compiler warning on Windows.

ha_innodb.cc:

Cast away a compiler warning; some functions return ulong or ulint for
errors, and some use int.  Let's hope these all fit in an int.

handler/ha_innodb.cc

@@ -3524,7 +3524,7 @@ set_max_autoinc:
 				err = innobase_set_max_autoinc(auto_inc);
 
 				if (err != DB_SUCCESS) {
-					error = err;
+					error = (int) err;
 				}
 			}
 			break;