xkbtext.c: Add tbGetBufferString helper function

Handles common case of allocating & copying string to temporary buffer

As a side effect, clears up gcc warning:
xkbtext.c: In function ‘XkbBehaviorText’:
xkbtext.c:1476:19: warning: declaration of ‘tmp’ shadows a previous local [-Wshadow]
 1476 |             char *tmp;
      |                   ^~~
xkbtext.c:1457:21: note: shadowed declaration is here
 1457 |     char buf[256], *tmp;
      |                     ^~~

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

0 files changed, 0 insertions, 0 deletions