Fix typo in Grabbed device warning message

BUG=none
TEST=Read message displayed when trying to run mtplot using a device that
     has been grabbed by an X input driver.

Change-Id: I5a4abcffd35621ec87b516974a00a50129bffa46
1 file changed
tree: 25eb0ea260c2cb1479efedd3ddc7c2b1b76407d1
  1. .gitignore
  2. autogen.sh
  3. configure.ac
  4. COPYING
  5. Makefile.am
  6. mtplot.c