msm: cpp: Add error handling for invalid ioctl pointer
Invalid ioctl pointer part of compat ioctl can cause a crash. Add
error handling for invalid ioctl pointer.
Change-Id: I5afe46a5d89854388186fa16d979dd2f1f788a84
Signed-off-by:
Krishnankutty Kolathappilly <kkolatha@codeaurora.org>
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