[BUG] Function returning unnamed declaration needs extra semicolon

Title: Function returning unnamed declaration needs extra semicolon.

Description:

This is the case when the function followed by Cpp1 code or EOF.

Minimal reproducer (https://cpp2.godbolt.org/z/cP1Gzrzad):

main: () = _ = :i32 = 0;

Commands:

cppfront main.cpp2
clang++17 -std=c++23 -stdlib=libc++ -lc++abi -pedantic-errors -Wall -Wextra -Wconversion -Werror=unused-result -I . main.cpp

Expected result: A well-formed program.

Actual result and error: main.cpp2: error: unexpected end of source file.

Doesn't reproduce anymore.

I suspect this was fixed by 785c44d

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