Convert one void* to arch_addr_t in x86 backend
diff --git a/sysdeps/linux-gnu/x86/fetch.c b/sysdeps/linux-gnu/x86/fetch.c
index aa02a0a..7c36686 100644
--- a/sysdeps/linux-gnu/x86/fetch.c
+++ b/sysdeps/linux-gnu/x86/fetch.c
@@ -58,7 +58,7 @@
 	struct user_regs_struct iregs;
 	struct user_fpregs_struct fpregs;
 
-	void *stack_pointer;
+	arch_addr_t stack_pointer;
 	size_t ireg;	/* Used-up integer registers.  */
 	size_t freg;	/* Used-up floating registers.  */