Does not compile on *-linux-android triple

[ScottBot10]

The get_minecraft_dir function doesn't have any return value if the OS is android.

libium/src/lib.rs

Lines 42 to 58 in 01d3aeb

	/// Gets the default Minecraft instance directory based on the current compilation `target_os`
	///
	/// If the `target_os` doesn't match `"macos"`, `"linux"`, or `"windows"`, this function will not compile.
	pub fn get_minecraft_dir() -> PathBuf {
	#[cfg(target_os = "windows")]
	return HOME.join("AppData").join("Roaming").join(".minecraft");
	#[cfg(target_os = "macos")]
	return HOME
	.join("Library")
	.join("Application Support")
	.join("minecraft");
	#[cfg(target_os = "linux")]
	return HOME.join(".minecraft");
	}