[misc] enforce a style

automation/tests/aegisub.cpp

libaegisub/ass/dialogue_parser.cpp

libaegisub/ass/time.cpp

libaegisub/ass/uuencode.cpp

libaegisub/audio/provider.cpp

libaegisub/audio/provider_convert.cpp

libaegisub/audio/provider_dummy.cpp

libaegisub/audio/provider_hd.cpp

libaegisub/audio/provider_lock.cpp

libaegisub/audio/provider_pcm.cpp

libaegisub/audio/provider_ram.cpp

libaegisub/common/cajun/elements.cpp

libaegisub/common/cajun/reader.cpp

libaegisub/common/cajun/writer.cpp

libaegisub/common/calltip_provider.cpp

libaegisub/common/character_count.cpp

libaegisub/common/charset.cpp

libaegisub/common/charset_6937.cpp

libaegisub/common/charset_6937.h

libaegisub/common/charset_conv.cpp