Three extra octets are now expected with the latest change to base64.s.
They happened to be covered by patterns allowing for zero padding at
the end of the section, but we don't want to allow fewer octets than
expected.
PR 31964
* testsuite/gas/all/base64.d: Adjust.
.* 00000040 00000000 00000040 00400000 .*
.* 00000040 00400000 00000010 03000000 .*
.* 00000010 03000000 00000008 00000000 .*
-.* 00000000 00000000 00( |00 |000000) ( |00000000) .*
+.* 00000000 00000000 00000000 ( |00000000) .*