+ VU Meter: fix compiler warning
+ VU Meter: fix compiler warning

zamaudio/calf-LR4,zamaudio/calf-LR4,jnetterf/calf,jnetterf/calf,adiknoth/calf,jnetterf/calf,adiknoth/calf,jnetterf/calf,zamaudio/calf-LR4,zamaudio/calf-LR4,jnetterf/calf,adiknoth/calf,adiknoth/calf,zamaudio/calf-LR4,adiknoth/calf