remove redundant type checks. return a boolean indicating whether or not
* src/vte.c(vte_sequence_handler_character_attributes, vte_sequence_handler_decset_internal): remove redundant type checks. * src/vte.c(all signal handlers): return a boolean indicating whether or not to exit the processing loop instance early to allow the application to deal with some input (usually along the lines of a signal requesting that the terminal be resized) (bug #118938).
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