File 0006-revert-no-rtti.patch of Package google-leveldb-1.23

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f8285b8..7ab9fe1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,10 +70,6 @@ else(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
   # Disable C++ exceptions.
   string(REGEX REPLACE "-fexceptions" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions")
-
-  # Disable RTTI.
-  string(REGEX REPLACE "-frtti" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
 endif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
 
 # Test whether -Wthread-safety is available. See