Build broken on macOS: implicit declaration of function 'jl_profile_is_buffer_full' is invalid in C99

[iamed2]

In file included from /Users/ericdavies/repos/juliamaster/src/signal-handling.c:120:
In file included from ./signals-unix.c:228:
./signals-mach.c:496:17: error: implicit declaration of function 'jl_profile_is_buffer_full' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
            if (jl_profile_is_buffer_full()) {
                ^
In file included from /Users/ericdavies/repos/juliamaster/src/signal-handling.c:120:
./signals-unix.c:695:21: error: implicit declaration of function 'jl_profile_is_buffer_full' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
                if (jl_profile_is_buffer_full()) {

Introduced by: #36006

[kimikage]

I'm sorry for my elementary mistakes.

As the comments added in PR #36006 say, "signals-*.c" are #included. That confuses me and my linter a lot. 🍇

[fredrikekre]

#38332