...at which point MutexContainer becomes all-inline and need no longer be
OOO_DLLPUBLIC_CHARTTOOLS

Change-Id: I2f9c089a1189cc8c0fe5cf1760f62e71c5bb7f51
Reviewed-on: https://gerrit.libreoffice.org/72052
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>