fuse_shim: re-protect R2CTrans_FuseShim from padding confusion
fuse_shim: re-protect R2CTrans_FuseShim from padding confusion

Was accidentally removed in 9d4e5c4efeb6347ef1057eb9b98e544042555720.
ROCmSoftwarePlatform/rocFFT,ROCmSoftwarePlatform/rocFFT,ROCmSoftwarePlatform/rocFFT,ROCmSoftwarePlatform/rocFFT