MDEV-11585 Hard-code the shared InnoDB temporary tablespace ID

Try hard-coding the ID as -2 instead of -1, so that they will not
be confused with ULINT_UNDEFINED on 32-bit platforms.

storage/innobase/include/fsp0types.h

@@ -33,7 +33,7 @@ Created May 26, 2009 Vasil Dimov
 have a smaller fil_space_t::id. */
 #define SRV_LOG_SPACE_FIRST_ID		0xFFFFFFF0U
 /** The fil_space_t::id of the innodb_temporary tablespace. */
-#define SRV_TMP_SPACE_ID		0xFFFFFFFFU
+#define SRV_TMP_SPACE_ID		0xFFFFFFFEU
 
 #include "univ.i"
 #include "ut0byte.h"