Bugfix in boot screen: avoid hangup in some situations

git-svn-id: svn://kolibrios.org@738 a494cfbc-eb01-0410-851d-a64ba20cac60

kernel/trunk/boot/bootvesa.inc

@@ -386,7 +386,9 @@ check_first_parm:
 .next_step:
         sub     ax,size_of_step*long_v_table
         cmp     ax,modes_table
-        jb      .zerro
+        jae     @f
+        mov     ax,modes_table
+@@:
 
         mov     word[home_cursor],ax
         push    word [preboot_graph]

kernel/trunk/network/socket.inc

@@ -343,8 +343,10 @@ sot_exit:
 ;
 ;***************************************************************************
 socket_close:
-    Index2RealAddr ebx
     mov     eax, 0xFFFFFFFF	    ; assume this operation will fail..
+    cmp     ebx, NUM_SOCKETS
+    jae     sc_exit
+    Index2RealAddr ebx
     cmp     [ebx + SOCKET.Status], dword SOCK_EMPTY
     jz	    sc_exit