[clangd][clang-tidy] Add missing symbols to the symbol map.

Differential Revision: https://reviews.llvm.org/D159462

Author: VitaNuo

clang/lib/Tooling/Inclusions/Stdlib/StdSpecialSymbolMap.inc

@@ -364,6 +364,8 @@ SYMBOL(make_integer_sequence, std::, <utility>)
 // Remove when the generator starts producing them.
 SYMBOL(make_any, std::, <any>)
 SYMBOL(any_cast, std::, <any>)
+SYMBOL(div, std::, <cstdlib>)
+SYMBOL(abort, std::, <cstdlib>)
 
 // The std::placeholder symbols (_1, ..., _N) are listed in the cppreference
 // placeholder.html, but the index only contains a single entry with "_1, _2, ..., _N"