--- OLD/xc/lib/lbxutil/lbx_zlib/lbx_zlib_io.c	Thu Jan  1 00:00:00 1970
+++ NEW/xc/lib/lbxutil/lbx_zlib/lbx_zlib_io.c	Thu Jan  1 00:00:00 1970
@@ -42,6 +42,7 @@
 #define NULL		0
 #endif
 
+extern unsigned long int Xalloc(); /* XXX should be prototyped */
 
 /*
  * The following is taken from the xtrans code, almost as is,
@@ -78,7 +79,7 @@
     ZlibBufferPtr b;
     int size;
 {
-    if ((b->bufbase = (char *)Xalloc(size)) == NULL)
+    if ((b->bufbase = Xalloc(size)) == NULL)
 	return -1;
     b->bufend = b->bufbase + size;
     b->bufptr = b->bufbase;