The following class generates a MissingDealloc warning:

@interface TestSELs : NSObject
{
	SEL a;
	SEL b;
}

@end

@implementation TestSELs

- (id)init
{
	if( (self = [super init]) )
	{
		a = @selector(a);
		b = @selector(b);
	}
	
	return self;
}

@end

Selectors aren't releasable objects (as far as anybody has ever told me...), so a -dealloc method isn't required. Not generating a MissingDealloc warning would thus be preferred.