cosmetic: ipa_proto.erl: Fix trailing whitespace

Change-Id: I8b742ae041670452745d5f0022e49b1bed0f1cf5

src/ipa_proto.erl

@@ -1,4 +1,4 @@
-% ip.access IPA multiplex protocol 
+% ip.access IPA multiplex protocol
 
 % (C) 2010,2012,2019 by Harald Welte <laforge@gnumonks.org>
 % (C) 2010 by On-Waves
@@ -50,12 +50,12 @@
 register_socket(Socket) ->
 	IpaPid = spawn(?MODULE, init_sock, [Socket, self()]),
 	% synchronously wait for init_sock to be done
-	receive 
+	receive
 		{ipa_init_sock_done, Socket} ->
 			% assign ownership of the socket to the new IPA handler process
 			gen_tcp:controlling_process(Socket, IpaPid),
 			{ok, IpaPid}
-	after 
+	after
 		?TIMEOUT ->
 			{error, timeout}
 	end.