cleanup

- fix possible crash in conc (but it's still an ugly hack)
- fix noob usage of strcmp
- flag some memory leaks (it would be nice, if the author(s) would clean
   up the mess himself)
- fix crash in substr
- whitespace cleanup

there are plenty more memory leaks in command.cpp - for example, every
goto in cubescript does not clean up anything

source/src/clientgame.cpp

@@ -1407,9 +1407,9 @@ void callvote(int type, const char *arg1, const char *arg2, const char *arg3)
                 break;
             default:
 
-				
-				
-				
+
+
+
 				putint(p, atoi(arg1));
                 break;
         }