Patch to prevent double free in lcrash

["Monty Vanderbilt" <mvb@xxxxxxxxxx>]

This patch prevents a segment violation from a double free when lcrash can't
read data from /dev/mem.

--- libklib/kl_util.c   Wed Sep 12 12:21:21 2001
+++ libklib/kl_util.c   Tue Oct  2 12:54:10 2001
@@ -466,8 +466,9 @@
                                            &size, ptr_module)){
                                kl_free_block(dump_page);
                                if(free_ptr_module){
                                        kl_free_block(*ptr_module);
+                                       *ptr_module = 0;
                                }
                                return(1);
                        }
                        *vaddr= addr_mod;
@@ -484,8 +485,9 @@
                                    &size, ptr_module)){
                        kl_free_block(dump_page);
                        if(free_ptr_module){
                                kl_free_block(*ptr_module);
+                               *ptr_module = 0;
                        }
                        return(1);
                }
                mod_found = 1;
@@ -495,8 +497,9 @@
        kl_free_block(dump_page);
        if(!mod_found){
                if(free_ptr_module){
                        kl_free_block(*ptr_module);
+                       *ptr_module = 0;
                }
                return(1);
        }
        return(0);
@@ -534,8 +537,9 @@
                GET_BLOCK(vaddr, *size, *ptr);
                if (KL_ERROR) {
                        if(free_ptr){
                                kl_free_block(*ptr);
+                               *ptr = 0;
                        }
                        return(1);
                }
        } else {

Monty VanderBilt