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lapd_core: Fix crash in lapd_dl_flush_hist() 

When lapd_dl_flush_hist() was called before we actually had started a
transmit history from lapd_dl_init(), we woul segfault before this
patch.

Change-Id: Ifa677c9b335dd2884b4f3e44699d901957a0500b
This commit is contained in:
Harald Welte 2016-08-01 00:24:19 +02:00
parent 881dcaf7aa
commit f92e44c539
1 changed files with 1 additions and 1 deletions
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2
src/gsm/lapd_core.c
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@ -158,7 +158,7 @@ static void lapd_dl_flush_hist(struct lapd_datalink *dl)
{
unsigned int i;
if (!dl->range_hist)
if (!dl->range_hist || !dl->tx_hist)
return;
for (i = 0; i < dl->range_hist; i++) {