Fixing compilation.

src/service/libc.cr

@@ -31,13 +31,16 @@ module System
 		gid = passwd.pw_gid
 
 		r = LibC.initgroups user_name, passwd.pw_gid
-		raise Errno.new "initgroups" if r != 0
+		# raise Errno.new "initgroups" if r != 0
+		raise Exception.new "initgroups" if r != 0
 
 		r = LibC.setgid gid
-		raise Errno.new "setgid" if r != 0
+		# raise Errno.new "setgid" if r != 0
+		raise Exception.new "setgid" if r != 0
 
 		r = LibC.setuid uid
-		raise Errno.new "setuid" if r != 0
+		# raise Errno.new "setuid" if r != 0
+		raise Exception.new "setuid" if r != 0
 	end
 end