in /etc/chromium-browser/default, unecessary invocation of grep and sed invoked twice

[J G Miller]

DISTRIB_CODENAME=qiana
DISTRIB_DESCRIPTION="Linux Mint 17 Qiana"
DISTRIB_ID=LinuxMint
DISTRIB_RELEASE=17

In the file /usr/share/linuxmint/common/artwork/chromium/default which gets copied by Linux Mint Adjustments to
/etc/chromium-browser/default (and why the disparity/lack of consistency in the file paths - one is chromium and the other
is chromium-browser?) there is the line

flashversion=`strings $flashso|grep ^LNX|sed -e "s/^LNX //"|sed -e "s/,/./g"`

When using sed, it is pointless and wasteful to precede it with a lgrep process to extract a unique line since sed has its own line matching functionality.

Thus, this line can be simplified to the more robust form without invoking grep and only invoking sed once and not twice as in the original.

flashversion=$(strings "${flashso}" | sed -ne '/^LNX /s|,|.|g ; s|^LNX ||p')