fix(bl1): prevent null pointer dereference

Added an assertion to ensure ptr is not NULL before
dereferencing it. This prevents potential null pointer
dereference issues detected by Coverity.

Change-Id: I2e3325cd7cbdf141959bacd6135461be24ae6169
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
1 file changed