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freebsd11_network: Add NULL check to if_getdrvflags.

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This is the proper fix for #14182, as discussed on the mailing list.
This commit is contained in:
Augustin Cavalier 2018-08-20 21:06:24 -04:00
parent ac3431d6e1
commit 4c00d515f1
1 changed files with 2 additions and 0 deletions
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2
src/libs/compat/freebsd11_network/if.c
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@ -1052,6 +1052,8 @@ if_setdrvflagbits(if_t ifp, int set_flags, int clear_flags)
int int
if_getdrvflags(if_t ifp) if_getdrvflags(if_t ifp)
{ {
if ((struct ifnet *)ifp == NULL)
return 0;
return ((struct ifnet *)ifp)->if_drv_flags; return ((struct ifnet *)ifp)->if_drv_flags;
} }