CMake: don't set fancy LTO flags, seem to have problems with oss-fuzz

Author: LebedevRI

cmake/compiler-flags.cmake

@@ -52,7 +52,10 @@ SET(CMAKE_MODULE_LINKER_FLAGS
 
 if(CMAKE_INTERPROCEDURAL_OPTIMIZATION)
   if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-    set(LIST -fforce-emit-vtables -fwhole-program-vtables -fstrict-vtable-pointers)
+    set(LIST )
+    list(APPEND LIST -fno-force-emit-vtables)
+    list(APPEND LIST -fno-whole-program-vtables)
+    list(APPEND LIST -fno-strict-vtable-pointers)
     add_compile_options("$<$<COMPILE_LANGUAGE:C,CXX>:${LIST}>")
   endif()
 endif()