In some circumstances, grpcpp/impl/codegen/async_unary_call.h is not in context when building code using generated headers. This will break the build. This change solves the issue, as grpcpp/impl/codegen/async_unary_call.h needs to be in context when the MSVC template compiler makes one of its passes.
In some circumstances,
grpcpp/impl/codegen/async_unary_call.h
is not in context when building code using generated headers. This will break the build. This change solves the issue, asgrpcpp/impl/codegen/async_unary_call.h
needs to be in context when the MSVC template compiler makes one of its passes.