checker: fix missing struct cast validation · vlang/v@66823c5

Self tests: vlib/v/checker/tests/cast_string_to_rune_err.vv#L2

cannot cast `string` to rune, use `'0'.runes()` instead.

Self tests: vlib/v/checker/tests/cast_string_to_rune_err.vv#L3

cannot cast `string` to rune, use `'012345'.runes()` instead.

Self tests: vlib/v/checker/tests/cast_string_to_rune_err.vv#L4

cannot cast `string` to rune, use `'v'.runes()` instead.

Self tests: vlib/v/checker/tests/cast_string_to_rune_err.vv#L5

cannot cast `string` to rune, use `'abcd'.runes()` instead.

Self tests: vlib/v/checker/tests/cast_string_to_rune_err.vv#L2

cannot cast type `string` to `rune`

Self tests: vlib/v/checker/tests/cast_string_to_rune_err.vv#L2

cannot cast `string` to rune, use `'0'.runes()` instead.

Self tests: vlib/v/checker/tests/cast_string_to_rune_err.vv#L3

cannot cast type `string` to `rune`

Self tests: vlib/v/checker/tests/cast_string_to_rune_err.vv#L3

cannot cast `string` to rune, use `'012345'.runes()` instead.

Self tests: vlib/v/checker/tests/cast_string_to_rune_err.vv#L4

cannot cast type `string` to `rune`

Self tests: vlib/v/checker/tests/cast_string_to_rune_err.vv#L4

cannot cast `string` to rune, use `'v'.runes()` instead.

Provide feedback