We should warn if EMF+ record < 12 bytes. Similarly, if the
record size is less than 12 bytes, that's evidence of a
corrupted EMF+ record, same with if the length or datasize
is too long. Thus we should warn at this point.

Also - if an if statement is not part of another if/else block
then best to have a newline separating them so they don't
look like they are part of that block.

Change-Id: I914c754fe7437d6d4b6f2e4aec2d28475eaf5d70
Reviewed-on: https://gerrit.libreoffice.org/43004Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Chris Sherlock <chris.sherlock79@gmail.com>