:bug: fix race condition on ProtoHelpersFuncMap
:bug: fix race condition on ProtoHelpersFuncMap

moul/protoc-gen-gotemplate,zoontek/protoc-gen-gotemplate,moul/protoc-gen-gotemplate,gfanton/protoc-gen-gotemplate,gfanton/protoc-gen-gotemplate,moul/protoc-gen-gotemplate,zoontek/protoc-gen-gotemplate,moul/protoc-gen-gotemplate