Made sure error messages do not print large erroneous values.

TODO

src/lib-sieve/cmd-redirect.c

src/lib-sieve/cmd-require.c

src/lib-sieve/ext-envelope.c

src/lib-sieve/ext-fileinto.c

src/lib-sieve/ext-reject.c

src/lib-sieve/plugins/imapflags/ext-imapflags-common.c

src/lib-sieve/plugins/imapflags/tag-flags.c

src/lib-sieve/plugins/include/cmd-include.c

src/lib-sieve/plugins/include/ext-include-common.c

src/lib-sieve/plugins/relational/ext-relational-common.c

src/lib-sieve/plugins/vacation/cmd-vacation.c

src/lib-sieve/plugins/variables/ext-variables-arguments.c

src/lib-sieve/sieve-actions.c

src/lib-sieve/sieve-binary.c

src/lib-sieve/sieve-comparators.c

src/lib-sieve/sieve-validator.c

src/lib-sieve/sieve-validator.h

src/lib-sieve/tst-address.c