Fixed get_time_str definition to match the prototype.

tools/winedump/dump.c

@@ -79,7 +79,7 @@ void dump_data( const unsigned char *ptr, unsigned int size, const char *prefix
     printf( "\n" );
 }
 
-const char*	get_time_str(DWORD _t)
+const char*	get_time_str(unsigned long _t)
 {
     time_t 	t = (time_t)_t;
     const char *str = ctime(&t);