firdes|kaiser window: fixing bug in Herrmann's filter length computation
firdes|kaiser window: fixing bug in Herrmann's filter length computation

biotrump/liquid-dsp,JayKickliter/liquid-dsp,andrepuschmann/liquid-dsp,cjcliffe/liquid-dsp,wangning223/liquid-dsp,jgaeddert/liquid-dsp,cjcliffe/liquid-dsp,cjcliffe/liquid-dsp,jgaeddert/liquid-dsp,wangning223/liquid-dsp,andrepuschmann/liquid-dsp,biotrump/liquid-dsp,wangning223/liquid-dsp,andrepuschmann/liquid-dsp,biotrump/liquid-dsp,jgaeddert/liquid-dsp,manuts/liquid-dsp,JayKickliter/liquid-dsp,JayKickliter/liquid-dsp,cjcliffe/liquid-dsp,manuts/liquid-dsp,jgaeddert/liquid-dsp,biotrump/liquid-dsp,andrepuschmann/liquid-dsp,wangning223/liquid-dsp,wangning223/liquid-dsp,biotrump/liquid-dsp,cjcliffe/liquid-dsp,manuts/liquid-dsp,manuts/liquid-dsp,andrepuschmann/liquid-dsp,jgaeddert/liquid-dsp,manuts/liquid-dsp,JayKickliter/liquid-dsp,JayKickliter/liquid-dsp