Build error on macOS platform

[cschol]

Build error during integration on macOS platform:

x86_64-apple-darwin17-clang++-libc++  -std=c++11 -stdlib=libc++   -fPIC -I/home/build/rack-plugin-toolchain/Rack-SDK/include -I/home/build/rack-plugin-toolchain/Rack-SDK/dep/include -MMD -MP -g -O3 -march=nocona -funsafe-math-optimizations -Wall -Wextra -Wno-unused-parameter -DARCH_MAC -mmacosx-version-min=10.7  -c -o build/src/Grendel.cpp.o src/Grendel.cpp
src/Grendel.cpp:6:12: error: invalid suffix 'd' on floating constant
        phase = 0.d;
                  ^
src/Grendel.cpp:7:16: error: invalid suffix 'd' on floating constant
        frequency = 1.d;
                      ^

[kockie69]

Removed the suffix d and tested plugin again on Windows. Fix uploaded.