Remove starting newline in demangled func name

[ItsDrike]

Describe your PR, what does it fix/add?

When searching for a Hyprland fucntion with findFunctionsByName, the returned vector of matches contain demangled names, which always seem to be prefixed with a newline.

static const auto CREATE_GROUP_METHODS = HyprlandAPI::findFunctionsByName(PHANDLE, "createGroup");
for (auto& method : CREATE_GROUP_METHODS) {
    if (method.demangled == "\nCWindow::createGroup()") {
        g_pOriginalCreateGroup = (voidFunctionT)method.address;
    }
}

Notice the if (method.demangled == "\nCWindow::createGroup()") . There's no reason this should be the case, the newline character shouldn't be there. (tested with "createGroup", "destroyGroup", "getNodeFromWindow" fucntions).

---

From what I understand, this was caused by this lambda function:

Hyprland/src/plugins/PluginAPI.cpp

Lines 293 to 305 in 3d1a167

	auto demangledFromID = [&](size_t id) -> std::string {
	size_t pos = 0;
	size_t count = 0;
	while (count < id) {
	pos++;
	pos = SYMBOLSDEMANGLED.find('\n', pos);
	if (pos == std::string::npos)
	return "";
	count++;
	}
	return SYMBOLSDEMANGLED.substr(pos, SYMBOLSDEMANGLED.find('\n', pos + 1) - pos);
	};

Which is supposed to return the contents of nth line, by finding positions of \n characters, returning a substring from that pos to next newline.

However the pos variable was set to the position of last newline, so it's included too. Instead, it should probably just be pos + 1 to skip that newline char.

Is there anything you want to mention? (unchecked code, possible bugs, found problems, breaking compatibility, etc.)

No

Is it ready for merging, or does it need work?

Ready to be merged.

[vaxerski]

lgtm