* CrashReporter: restore explicit environ(7) after 8bbeee1173
BSD systems don't declare environ(7) in any header like POSIX suggests.
src/signal-safe.cpp:12:23: error: use of undeclared identifier 'environ'
12 | for (char** var = environ; *var != nullptr; var++) {
| ^
* fix
---------
Co-authored-by: Vaxry <vaxry@vaxry.net>
* framebuffer: avoid gluint overflow
GLuint was being initialized to -1 and rolling over to unsigned int max,
its defined behaviour but very unnecessery. add a bool and use it for
checking if allocated or not.
* opengl: avoid gluint rollover
-1 rolls over to unsigned int max, use 0xFF instead.
* core: big uint64_t to int type conversion
there were a few uint64_t to int implicit conversions overflowing int
and causing UB, make all monitor/workspaces/windows use the new
typedefs. also fix the various related 64 to 32 implicit conversions
going around found with -Wshorten-64-to-32
`CrashReporter::createAndSaveCrash()` is not async-signal-safe,
resulting in random deadlocks/double-crashes during Hyprland crashes.
This changes the function to be (mostly) async-signal-safe.
