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Fixed potential segmentation fault

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This commit is contained in:
Stefan Wahren
2012-10-22 23:35:45 +02:00
parent 688f0d3bc0
commit cfa35db086
1 changed files with 6 additions and 0 deletions
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6
mbus/mbus-protocol-aux.c
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@ -1691,6 +1691,12 @@ mbus_sendrecv_request(mbus_handle *handle, int address, mbus_frame *reply, int m
mbus_frame *frame, *next_frame; mbus_frame *frame, *next_frame;
int frame_count = 0, result; int frame_count = 0, result;
if (handle == NULL)
{
MBUS_ERROR("%s: Invalid M-Bus handle for request.\n", __PRETTY_FUNCTION__);
return 1;
}
frame = mbus_frame_new(MBUS_FRAME_TYPE_SHORT); frame = mbus_frame_new(MBUS_FRAME_TYPE_SHORT);
if (frame == NULL) if (frame == NULL)