diff -urN aa/a2ps-4.13/lib/path-concat.c a2ps-4.13/lib/path-concat.c
--- aa/a2ps-4.13/lib/path-concat.c	1999-10-10 20:34:46.000000000 +0200
+++ a2ps-4.13/lib/path-concat.c	2004-08-28 17:53:01.137958432 +0200
@@ -31,8 +31,6 @@
 #endif
 #include <sys/types.h>
 
-char *malloc ();
-
 #ifndef DIRECTORY_SEPARATOR
 # define DIRECTORY_SEPARATOR '/'
 #endif