use more correct const char * for things that should not be modified. This should also fix the switch_cpp.cpp changes from MODAPP-44. More patches to follow up on this for a few more modules that will likely break with this commit.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6120 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/event_handlers/mod_event_socket/mod_event_socket.c

@@ -631,7 +631,7 @@ static switch_status_t parse_command(listener_t * listener, switch_event_t *even
 			goto done;
 		} else if (!strncasecmp(cmd, "getvar", 6)) {
 			char *arg;
-			char *val = "";
+			const char *val = "";
 
 			strip_cr(cmd);