Fix this:

audacious-dumb.c:104: warning: ignoring return value of function declared with attribute warn_unused_result
audacious-dumb.c:110: warning: ignoring return value of function declared with attribute warn_unused_result
audacious-dumb.c:111: warning: ignoring return value of function declared with attribute warn_unused_result
audacious-dumb.c:115: warning: ignoring return value of function declared with attribute warn_unused_result
audacious-dumb.c:116: warning: ignoring return value of function declared with attribute warn_unused_result
