Remove unused variable
Replace pointer with const reference
Replace pointer with const reference
Replace pointer with const reference
Code style
Code style
Code style
Indentation
Code style
Change type of variable to bool
Cleanup boolean condition
Add SDL 2 fall-back for error dialogs
Rename variable for shorter lines
Remove redundant info from the data files error
Add comment to end of namespace
Indent #if
Use vector empty method
Code style
Code style
Code style