build: turn off FLB_RECORD_ACCESSOR if bison/flex unavailable

Without this, cmake emits an error while initialization, due to
bison/flex required by record-accessor but not available.

> This is a build time dependency, you can either install the dependencies or
> disable the feature setting the CMake option -DFLB_RECORD_ACCESSOR=Off .

Signed-off-by: Fujimoto Seiji <fujimoto@clear-code.com>

cmake/windows-setup.cmake

@@ -86,5 +86,6 @@ if(CMAKE_SYSTEM_NAME MATCHES "Windows")
   if (NOT (${FLEX_FOUND} AND ${BISON_FOUND}))
     message(STATUS "flex and bison not found. Disable stream_processor building.")
     set(FLB_STREAM_PROCESSOR No)
+    set(FLB_RECORD_ACCESSOR  No)
   endif()
 endif()