Fix regression from commit fb29954
Fix regression from commit fb29954

In the mmap() bugfix patch, I reduced the scope of a variable below its
required range.  Reverting to the previous definition

Signed-off-by: Dave Heller <dadf76b92c028da3488e57973c6c8cd3d5ab990c@linux.vnet.ibm.com>

hellerda/sb-signing-utils,hellerda/sb-signing-utils