cosmetic: gsup_protocol.erl: Fix trailing whitespace

Change-Id: I9c894440818040151015283b0df7e1646110f5d5

src/gsup_protocol.erl

@@ -2,7 +2,7 @@
 % License, v. 2.0. If a copy of the MPL was not distributed with this
 % file, You can obtain one at https://mozilla.org/MPL/2.0/.
 % (C) 2019 Andrey Velikiy <agreat22@gmail.com>
-% (C) 2019 Fairwaves (edited) 
+% (C) 2019 Fairwaves (edited)
 
 -module(gsup_protocol).
 
@@ -34,7 +34,7 @@ decode(<<MsgType, Tail/binary>>) ->
         true -> GSUPMessage;
         false -> error({mandatory_ie_missing, MsgTypeAtom, Mandatory -- maps:keys(GSUPMessage)})
       end;
-    _ -> 
+    _ ->
       error({unknown_gsup_msg_type, MsgType})
   end.
 
@@ -299,13 +299,13 @@ encode(MsgType, GSUPMessage) when is_integer(MsgType), is_map(GSUPMessage), MsgT
       Possible = Mandatory ++ maps:get(optional, Map, []) ++ ?OPTIONAL_DEFAULT,
       case {maps:size(maps:with(Mandatory, GSUPMessage)) == length(Mandatory),
             maps:size(maps:without(Possible, GSUPMessage)) == 0} of
-        {true, true} -> 
+        {true, true} ->
           Tail = encode_ie(GSUPMessage, <<>>),
           <<MsgType, Tail/binary>>;
         {false, _} -> error({mandatory_ie_missing, MsgTypeAtom, Mandatory -- maps:keys(GSUPMessage)});
         {_, false} -> error({ie_not_expected, MsgTypeAtom, maps:keys(GSUPMessage) -- Possible})
       end;
-    _ -> 
+    _ ->
       error({unknown_gsup_msg_type, MsgType})
   end.