Remove use of cast-as-l-value extension, removed in GCC 3.5.

--- uClibc-0.9.26/libc/sysdeps/linux/m68k/ptrace.c.orig	2004-05-29 04:20:50.930239039 +0200
+++ uClibc-0.9.26/libc/sysdeps/linux/m68k/ptrace.c	2004-05-29 04:18:37.787077340 +0200
@@ -8,7 +8,7 @@ ptrace(int request, int pid, int addr, i
 {
 	long ret;
 	long res;
-	if (request > 0 && request < 4) (long *)data = &ret;
+	if (request > 0 && request < 4) data = (int)&ret;
 
 	__asm__ volatile ("movel %1,%/d0\n\t"
 			  "movel %2,%/d1\n\t"