fs/jffs2/mini_inflate.c: use "static inline" instead of "inline"

This makes gcc no longer expect an out-of-line version of the
functions being present elsewhere.

This fixes a failure to build on several marvell targets with gcc-7 on
Debian:

  https://bugs.debian.org/877963

Signed-off-by: Adrian Bunk <bunk@debian.org>
Signed-off-by: Vagrant Cascadian <vagrant@debian.org>
1 file changed