[FlatBuffer] Fix the issue that third-party flatbuffer module can not compile successfully (#3812)

cmake/external/flatbuffers.cmake

@@ -44,7 +44,7 @@ SET(OPTIONAL_ARGS "-DCMAKE_CXX_COMPILER=${HOST_CXX_COMPILER}"
 ExternalProject_Add(
     extern_flatbuffers
     ${EXTERNAL_PROJECT_LOG_ARGS}
-    GIT_REPOSITORY  ""
+    GIT_REPOSITORY  "https://github.com/google/flatbuffers.git"
     GIT_TAG         "v1.12.0"
     SOURCE_DIR      ${FLATBUFFERS_SOURCES_DIR}
     PREFIX          ${FLATBUFFERS_INCLUDE_DIR}

lite/api/CMakeLists.txt

@@ -2,7 +2,7 @@ if(LITE_WITH_LIGHT_WEIGHT_FRAMEWORK OR (NOT LITE_WITH_LOG))
   lite_cc_library(place SRCS paddle_place.cc DEPS logging)
 else()
   lite_cc_library(place SRCS paddle_place.cc DEPS glog)
-endif(LITE_WITH_LIGHT_WEIGHT_FRAMEWORK)
+endif()
 
 if (LITE_ON_TINY_PUBLISH)
     set(CMAKE_CXX_FLAGS_RELEASE "-Os -DNDEBUG")