Fix several errors flagged by -Wall
gui/src/FilePreview.cpp
gui/src/FilePreview.h
These files were totally commented out and have been untouched
for over a year. They have been deleted.
libs/hydrogen/include/hydrogen/instrument.h
libs/hydrogen/src/instrument.cpp
Instrument::get_layer() marked inline, so code moved to header to make it inline.
Instrument::Instrument() Triggered a pedantic error about initialization. So,
parameters were rearranged to match the order they were declared.
libs/hydrogen/src/local_file_mgr.cpp
LocalFileMng::saveDrumkit() was not using the pSample local variable.
gui/src/PatternEditor/PianoRollEditor.cpp
gui/src/PatternEditor/PianoRollEditor.h
libs/hydrogen/src/midiMap.cpp
libs/hydrogen/src/sequencer/sequencer.cpp
Add newline to ends of files. (An error on some old compilers.)