Snippets for librecad 2.2.1.4 from Fedora s390x

Sourced from https://kojipkgs.fedoraproject.org/packages/librecad/2.2.1.4/3.fc45/data/logs/s390x/build.log.

• lib/filters/rs_filterdxf1.cpp:1759:35: warning: comparison is always true due to limited range of data type [-Wtype-limits]
   1759 |         if(fBuf[bc]<32 && fBuf[bc]>=0) {
        |                           ~~~~~~~~^~~
  

• circletools.cpp:729:9: warning: variable ‘matched’ set but not used [-Wunused-but-set-variable=]
    729 |     int matched = 0;
        |         ^~~~~~~
  

• circletools.cpp:275:13: warning: ‘bool {anonymous}::changeCircleLayerInPlace(Plug_Entity*, const QString&, bool&)’ defined but not used [-Wunused-function]
    275 | static bool changeCircleLayerInPlace(Plug_Entity* ent, const QString& targetLayer, bool& outAlreadyOnLayer) {
        |             ^~~~~~~~~~~~~~~~~~~~~~~~