WINGs: Removed cast to change function prototype

When a function is used as a call-back, it is dangerous to have
arguments with a type different than what is expected by the
call-back definition.

This patch sets the argument list to match what is expected by
the call-back prototype and inserts an explicit type conversion
at the beginning of the function.

WINGs/memory.c

@@ -52,7 +52,7 @@ static void defaultHandler(int bla)
 		exit(1);
 }
 
-static waborthandler *aborthandler = (waborthandler *) defaultHandler;
+static waborthandler *aborthandler = defaultHandler;
 
 #define wAbort(a) (*aborthandler)(a)